controlling idea in an informative essay

How to Write a Controlling Idea Essay

Writing your essay.

One of the first steps in crafting an effective essay is asserting a controlling idea or main idea. ‌ The controlling idea of the essay states your driving opinion, belief or argument regarding the essay topic ‌ and is typically the topic sentence, not necessarily the first sentence. A strong controlling idea is broad enough to include multiple examples and perspectives, but focused enough to keep the essay on a logical and easy-to-follow track. Once you've located your controlling idea, you are prepared to extend the idea into a thoughtful, well-rounded essay that provides evidence to support your position.

As prewriting, ‌ prepare a graphic organizer to provide a visual guide for the writing process of your essay. ‌ One approach to a graphic organizer is a box web. At the top of a piece of paper, write your broad topic, such as "Romeo and Juliet". Draw a line from the topic to a box. Draw three lines from the box to three smaller boxes. Draw three additional lines connecting the three boxes to a single box at the bottom of your paper. This will help with brainstorming around the central idea for the topic of the essay.

Write your controlling idea in the first box of the organizer. ‌ The controlling idea is the main point, position, opinion or argument you will defend in your essay. ‌ For a paper on "Romeo and Juliet," a controlling idea might be "Juliet is a feminist character" or "'Romeo and Juliet' is Shakespeare's most tragic play." The controlling idea should not be a simple statement of fact, but rather an arguable position that asserts your stance on the issue.

Write a concrete example in each of the subsequent three boxes that supports your controlling idea. ‌ The examples may be quotations from a text, excerpts from research papers or statements from experts that support your position. ‌ Use only one example per box. Beneath each example, write a phrase that demonstrates how the example supports your controlling idea.

‌ Rephrase your controlling idea in the final box of the graphic organizer ‌. The statement should reassert your position but sound distinct from your controlling idea statement. If your controlling idea statement was "'Romeo and Juliet' is Shakespeare's most tragic play," your rephrasing statement might read, "Both the number and the poignancy of the deaths in 'Romeo and Juliet' make the play Shakespeare's most tragic work."

Refer to the first box in your graphic organizer to write your thesis statement in your introductory paragraph. ‌ The thesis statement should contain both the general topic of your paper as well as your controlling idea. ‌ A thesis statement might read, "Though Shakespeare composed many tragic plays, 'Romeo and Juliet' stands alone as his most tragic work." Write at least three subsequent sentences that clarify your first statement, summarize the direction of your essay and conclude the paragraph to transition into specific examples.

Refer to your first supporting evidence box to compose your first body paragraph. ‌ The body paragraph should appropriately cite your piece of evidence and clearly connect it to your controlling idea at the beginning of the paragraph. ‌ This will be the main idea of the paragraph. Include a concluding sentence that firmly reasserts your controlling idea based on the evidence. For example, your first body paragraph might conclude, "The depiction of Juliet as youthful and innocent makes her subsequent death even more tragic than the deaths of less sympathetic Shakespeare characters."

Compose an additional two body paragraphs using your two remaining evidence boxes in the same way previously outlined. These will be your supporting details.

Conclude your essay with a final paragraph that summarizes your main arguments and asserts your controlling idea as rephrased in your last text box in your graphic organizer.

• Avoid "guiding" phrases like, "In conclusion" or "My first point is". They distract the reader and add unnecessary bulk.
• Do not mention the essay in the essay. For example, do not include, "In this essay, I will do the following" or a similar phrase in your opening paragraph.

Always read through your essay for revising.

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Hannah Wahlig began writing and editing professionally in 2001. Her experience includes copy for newspapers, journals and magazines, as well as book editing. She is also a certified lactation counselor. She holds a Bachelor of Arts in English from Mount Holyoke College, and Master's degrees in education and community psychology from the University of Massachusetts.

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Online Guide to Writing and Research

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• Online Guide to Writing

Thesis Statement and Controlling Idea

So what? This is the question you will get asked if your thesis statement, or main idea, is not obvious in your paper. Your thesis statement is the most important part of your writing; without it, your paper doesn’t have a main point or stance. A thesis statement states the purpose and topic of your writing, and the controlling idea indicates the direction and, often, the writing strategy you will adopt. 

Generally, your thesis is placed at the end of your introduction and is a concise and simple sentence that combines your topic and your position on the topic. Like a road map, your thesis lets your readers know what to expect from the rest of your paper. Your body paragraphs support it, and your essay lacks direction without it.

It is important to keep in mind that this early in your writing, your thesis statement is really a working thesis that you use to begin thinking about your topic. You may revise this thesis many times before you are finished thinking and ready to write your final draft. Below are some sample thesis statements.  

YOUR TOPIC + POSITION ON TOPIC = THESIS STATEMENT

Thesis statement do's and don'ts.

Present an argument, stance, or claim. Can your audience argue with it? 

Provide a key to the organization of your paper. Can you construct body paragraphs that support it? 

Mirror the assignment prompt. Are you following what is expected of you?

Present the thesis at the end of the introduction.  

Answer the question: “so what?”  

Present an argument that can be supported by reputable research. Is your argument logical?

Embrace the “how” and “why” elements. It’s a great strategy to present the problem, examine why it’s a problem, and show how it can be fixed. 

Include announcement style language like “this paper will discuss” or “this will be shown in this essay.” 

Be informative only with no argument or stance, such as, “Some high school seniors decide to take a gap year.” 

Include overly broad or generalized statements like, “Kids of this generation are lazy.”

Force the reader to guess what the paper will prove or discuss 

Be questions. 

Key Takeaways

Your thesis is one statement at the end of your introduction and should be clear, concise, and arguable.

Without a thesis, your paper lacks direction and purpose. 

Mailing Address: 3501 University Blvd. East, Adelphi, MD 20783 This work is licensed under a  Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License . © 2022 UMGC. All links to external sites were verified at the time of publication. UMGC is not responsible for the validity or integrity of information located at external sites.

Table of Contents: Online Guide to Writing

Chapter 1: College Writing

How Does College Writing Differ from Workplace Writing?

What Is College Writing?

Why So Much Emphasis on Writing?

Chapter 2: The Writing Process

Doing Exploratory Research

Getting from Notes to Your Draft

Introduction

Prewriting - Techniques to Get Started - Mining Your Intuition

Prewriting: Targeting Your Audience

Prewriting: Techniques to Get Started

Prewriting: Understanding Your Assignment

Rewriting: Being Your Own Critic

Rewriting: Creating a Revision Strategy

Rewriting: Getting Feedback

Rewriting: The Final Draft

Techniques to Get Started - Outlining

Techniques to Get Started - Using Systematic Techniques

Writing: Getting from Notes to Your Draft - Freewriting

Writing: Getting from Notes to Your Draft - Summarizing Your Ideas

Writing: Outlining What You Will Write

Chapter 3: Thinking Strategies

A Word About Style, Voice, and Tone

A Word About Style, Voice, and Tone: Style Through Vocabulary and Diction

Critical Strategies and Writing

Critical Strategies and Writing: Analysis

Critical Strategies and Writing: Evaluation

Critical Strategies and Writing: Persuasion

Critical Strategies and Writing: Synthesis

Developing a Paper Using Strategies

Kinds of Assignments You Will Write

Patterns for Presenting Information

Patterns for Presenting Information: Critiques

Patterns for Presenting Information: Discussing Raw Data

Patterns for Presenting Information: General-to-Specific Pattern

Patterns for Presenting Information: Problem-Cause-Solution Pattern

Patterns for Presenting Information: Specific-to-General Pattern

Patterns for Presenting Information: Summaries and Abstracts

Supporting with Research and Examples

Writing Essay Examinations

Writing Essay Examinations: Make Your Answer Relevant and Complete

Writing Essay Examinations: Organize Thinking Before Writing

Writing Essay Examinations: Read and Understand the Question

Chapter 4: The Research Process

Planning and Writing a Research Paper

Planning and Writing a Research Paper: Ask a Research Question

Planning and Writing a Research Paper: Cite Sources

Planning and Writing a Research Paper: Collect Evidence

Planning and Writing a Research Paper: Decide Your Point of View, or Role, for Your Research

Planning and Writing a Research Paper: Draw Conclusions

Planning and Writing a Research Paper: Find a Topic and Get an Overview

Planning and Writing a Research Paper: Manage Your Resources

Planning and Writing a Research Paper: Outline

Planning and Writing a Research Paper: Survey the Literature

Planning and Writing a Research Paper: Work Your Sources into Your Research Writing

Research Resources: Where Are Research Resources Found? - Human Resources

Research Resources: What Are Research Resources?

Research Resources: Where Are Research Resources Found?

Research Resources: Where Are Research Resources Found? - Electronic Resources

Research Resources: Where Are Research Resources Found? - Print Resources

Structuring the Research Paper: Formal Research Structure

Structuring the Research Paper: Informal Research Structure

The Nature of Research

The Research Assignment: How Should Research Sources Be Evaluated?

The Research Assignment: When Is Research Needed?

The Research Assignment: Why Perform Research?

Chapter 5: Academic Integrity

Academic Integrity

Giving Credit to Sources

Giving Credit to Sources: Copyright Laws

Giving Credit to Sources: Documentation

Giving Credit to Sources: Style Guides

Integrating Sources

Practicing Academic Integrity

Practicing Academic Integrity: Keeping Accurate Records

Practicing Academic Integrity: Managing Source Material

Practicing Academic Integrity: Managing Source Material - Paraphrasing Your Source

Practicing Academic Integrity: Managing Source Material - Quoting Your Source

Practicing Academic Integrity: Managing Source Material - Summarizing Your Sources

Types of Documentation

Types of Documentation: Bibliographies and Source Lists

Types of Documentation: Citing World Wide Web Sources

Types of Documentation: In-Text or Parenthetical Citations

Types of Documentation: In-Text or Parenthetical Citations - APA Style

Types of Documentation: In-Text or Parenthetical Citations - CSE/CBE Style

Types of Documentation: In-Text or Parenthetical Citations - Chicago Style

Types of Documentation: In-Text or Parenthetical Citations - MLA Style

Types of Documentation: Note Citations

Chapter 6: Using Library Resources

Finding Library Resources

Chapter 7: Assessing Your Writing

How Is Writing Graded?

How Is Writing Graded?: A General Assessment Tool

The Draft Stage

The Draft Stage: The First Draft

The Draft Stage: The Revision Process and the Final Draft

The Draft Stage: Using Feedback

The Research Stage

Using Assessment to Improve Your Writing

Chapter 8: Other Frequently Assigned Papers

Reviews and Reaction Papers: Article and Book Reviews

Reviews and Reaction Papers: Reaction Papers

Writing Arguments

Writing Arguments: Adapting the Argument Structure

Writing Arguments: Purposes of Argument

Writing Arguments: References to Consult for Writing Arguments

Writing Arguments: Steps to Writing an Argument - Anticipate Active Opposition

Writing Arguments: Steps to Writing an Argument - Determine Your Organization

Writing Arguments: Steps to Writing an Argument - Develop Your Argument

Writing Arguments: Steps to Writing an Argument - Introduce Your Argument

Writing Arguments: Steps to Writing an Argument - State Your Thesis or Proposition

Writing Arguments: Steps to Writing an Argument - Write Your Conclusion

Writing Arguments: Types of Argument

Appendix A: Books to Help Improve Your Writing

Dictionaries

General Style Manuals

Researching on the Internet

Special Style Manuals

Writing Handbooks

Appendix B: Collaborative Writing and Peer Reviewing

Collaborative Writing: Assignments to Accompany the Group Project

Collaborative Writing: Informal Progress Report

Collaborative Writing: Issues to Resolve

Collaborative Writing: Methodology

Collaborative Writing: Peer Evaluation

Collaborative Writing: Tasks of Collaborative Writing Group Members

Collaborative Writing: Writing Plan

General Introduction

Peer Reviewing

Appendix C: Developing an Improvement Plan

Working with Your Instructor’s Comments and Grades

Appendix D: Writing Plan and Project Schedule

Devising a Writing Project Plan and Schedule

Reviewing Your Plan with Others

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Developing a Thesis Statement

Many papers you write require developing a thesis statement. In this section you’ll learn what a thesis statement is and how to write one.

Keep in mind that not all papers require thesis statements . If in doubt, please consult your instructor for assistance.

What is a thesis statement?

A thesis statement . . .

• Makes an argumentative assertion about a topic; it states the conclusions that you have reached about your topic.
• Makes a promise to the reader about the scope, purpose, and direction of your paper.
• Is focused and specific enough to be “proven” within the boundaries of your paper.
• Is generally located near the end of the introduction ; sometimes, in a long paper, the thesis will be expressed in several sentences or in an entire paragraph.
• Identifies the relationships between the pieces of evidence that you are using to support your argument.

Not all papers require thesis statements! Ask your instructor if you’re in doubt whether you need one.

Identify a topic

Your topic is the subject about which you will write. Your assignment may suggest several ways of looking at a topic; or it may name a fairly general concept that you will explore or analyze in your paper.

Consider what your assignment asks you to do

Inform yourself about your topic, focus on one aspect of your topic, ask yourself whether your topic is worthy of your efforts, generate a topic from an assignment.

Below are some possible topics based on sample assignments.

Sample assignment 1

Analyze Spain’s neutrality in World War II.

Identified topic

Franco’s role in the diplomatic relationships between the Allies and the Axis

This topic avoids generalities such as “Spain” and “World War II,” addressing instead on Franco’s role (a specific aspect of “Spain”) and the diplomatic relations between the Allies and Axis (a specific aspect of World War II).

Sample assignment 2

Analyze one of Homer’s epic similes in the Iliad.

The relationship between the portrayal of warfare and the epic simile about Simoisius at 4.547-64.

This topic focuses on a single simile and relates it to a single aspect of the Iliad ( warfare being a major theme in that work).

Developing a Thesis Statement–Additional information

Your assignment may suggest several ways of looking at a topic, or it may name a fairly general concept that you will explore or analyze in your paper. You’ll want to read your assignment carefully, looking for key terms that you can use to focus your topic.

Sample assignment: Analyze Spain’s neutrality in World War II Key terms: analyze, Spain’s neutrality, World War II

After you’ve identified the key words in your topic, the next step is to read about them in several sources, or generate as much information as possible through an analysis of your topic. Obviously, the more material or knowledge you have, the more possibilities will be available for a strong argument. For the sample assignment above, you’ll want to look at books and articles on World War II in general, and Spain’s neutrality in particular.

As you consider your options, you must decide to focus on one aspect of your topic. This means that you cannot include everything you’ve learned about your topic, nor should you go off in several directions. If you end up covering too many different aspects of a topic, your paper will sprawl and be unconvincing in its argument, and it most likely will not fulfull the assignment requirements.

For the sample assignment above, both Spain’s neutrality and World War II are topics far too broad to explore in a paper. You may instead decide to focus on Franco’s role in the diplomatic relationships between the Allies and the Axis , which narrows down what aspects of Spain’s neutrality and World War II you want to discuss, as well as establishes a specific link between those two aspects.

Before you go too far, however, ask yourself whether your topic is worthy of your efforts. Try to avoid topics that already have too much written about them (i.e., “eating disorders and body image among adolescent women”) or that simply are not important (i.e. “why I like ice cream”). These topics may lead to a thesis that is either dry fact or a weird claim that cannot be supported. A good thesis falls somewhere between the two extremes. To arrive at this point, ask yourself what is new, interesting, contestable, or controversial about your topic.

As you work on your thesis, remember to keep the rest of your paper in mind at all times . Sometimes your thesis needs to evolve as you develop new insights, find new evidence, or take a different approach to your topic.

Derive a main point from topic

Once you have a topic, you will have to decide what the main point of your paper will be. This point, the “controlling idea,” becomes the core of your argument (thesis statement) and it is the unifying idea to which you will relate all your sub-theses. You can then turn this “controlling idea” into a purpose statement about what you intend to do in your paper.

Look for patterns in your evidence

Compose a purpose statement.

Consult the examples below for suggestions on how to look for patterns in your evidence and construct a purpose statement.

• Franco first tried to negotiate with the Axis
• Franco turned to the Allies when he couldn’t get some concessions that he wanted from the Axis

Possible conclusion:

Spain’s neutrality in WWII occurred for an entirely personal reason: Franco’s desire to preserve his own (and Spain’s) power.

Purpose statement

This paper will analyze Franco’s diplomacy during World War II to see how it contributed to Spain’s neutrality.

• The simile compares Simoisius to a tree, which is a peaceful, natural image.
• The tree in the simile is chopped down to make wheels for a chariot, which is an object used in warfare.

At first, the simile seems to take the reader away from the world of warfare, but we end up back in that world by the end.

This paper will analyze the way the simile about Simoisius at 4.547-64 moves in and out of the world of warfare.

Derive purpose statement from topic

To find out what your “controlling idea” is, you have to examine and evaluate your evidence . As you consider your evidence, you may notice patterns emerging, data repeated in more than one source, or facts that favor one view more than another. These patterns or data may then lead you to some conclusions about your topic and suggest that you can successfully argue for one idea better than another.

For instance, you might find out that Franco first tried to negotiate with the Axis, but when he couldn’t get some concessions that he wanted from them, he turned to the Allies. As you read more about Franco’s decisions, you may conclude that Spain’s neutrality in WWII occurred for an entirely personal reason: his desire to preserve his own (and Spain’s) power. Based on this conclusion, you can then write a trial thesis statement to help you decide what material belongs in your paper.

Sometimes you won’t be able to find a focus or identify your “spin” or specific argument immediately. Like some writers, you might begin with a purpose statement just to get yourself going. A purpose statement is one or more sentences that announce your topic and indicate the structure of the paper but do not state the conclusions you have drawn . Thus, you might begin with something like this:

• This paper will look at modern language to see if it reflects male dominance or female oppression.
• I plan to analyze anger and derision in offensive language to see if they represent a challenge of society’s authority.

At some point, you can turn a purpose statement into a thesis statement. As you think and write about your topic, you can restrict, clarify, and refine your argument, crafting your thesis statement to reflect your thinking.

As you work on your thesis, remember to keep the rest of your paper in mind at all times. Sometimes your thesis needs to evolve as you develop new insights, find new evidence, or take a different approach to your topic.

Compose a draft thesis statement

If you are writing a paper that will have an argumentative thesis and are having trouble getting started, the techniques in the table below may help you develop a temporary or “working” thesis statement.

Begin with a purpose statement that you will later turn into a thesis statement.

Assignment: Discuss the history of the Reform Party and explain its influence on the 1990 presidential and Congressional election.

Purpose Statement: This paper briefly sketches the history of the grassroots, conservative, Perot-led Reform Party and analyzes how it influenced the economic and social ideologies of the two mainstream parties.

Question-to-Assertion

If your assignment asks a specific question(s), turn the question(s) into an assertion and give reasons why it is true or reasons for your opinion.

Assignment : What do Aylmer and Rappaccini have to be proud of? Why aren’t they satisfied with these things? How does pride, as demonstrated in “The Birthmark” and “Rappaccini’s Daughter,” lead to unexpected problems?

Beginning thesis statement: Alymer and Rappaccinni are proud of their great knowledge; however, they are also very greedy and are driven to use their knowledge to alter some aspect of nature as a test of their ability. Evil results when they try to “play God.”

Write a sentence that summarizes the main idea of the essay you plan to write.

Main idea: The reason some toys succeed in the market is that they appeal to the consumers’ sense of the ridiculous and their basic desire to laugh at themselves.

Make a list of the ideas that you want to include; consider the ideas and try to group them.

• nature = peaceful
• war matériel = violent (competes with 1?)
• need for time and space to mourn the dead
• war is inescapable (competes with 3?)

Use a formula to arrive at a working thesis statement (you will revise this later).

• although most readers of _______ have argued that _______, closer examination shows that _______.
• _______ uses _______ and _____ to prove that ________.
• phenomenon x is a result of the combination of __________, __________, and _________.

What to keep in mind as you draft an initial thesis statement

Beginning statements obtained through the methods illustrated above can serve as a framework for planning or drafting your paper, but remember they’re not yet the specific, argumentative thesis you want for the final version of your paper. In fact, in its first stages, a thesis statement usually is ill-formed or rough and serves only as a planning tool.

As you write, you may discover evidence that does not fit your temporary or “working” thesis. Or you may reach deeper insights about your topic as you do more research, and you will find that your thesis statement has to be more complicated to match the evidence that you want to use.

You must be willing to reject or omit some evidence in order to keep your paper cohesive and your reader focused. Or you may have to revise your thesis to match the evidence and insights that you want to discuss. Read your draft carefully, noting the conclusions you have drawn and the major ideas which support or prove those conclusions. These will be the elements of your final thesis statement.

Sometimes you will not be able to identify these elements in your early drafts, but as you consider how your argument is developing and how your evidence supports your main idea, ask yourself, “ What is the main point that I want to prove/discuss? ” and “ How will I convince the reader that this is true? ” When you can answer these questions, then you can begin to refine the thesis statement.

Refine and polish the thesis statement

To get to your final thesis, you’ll need to refine your draft thesis so that it’s specific and arguable.

• Ask if your draft thesis addresses the assignment
• Question each part of your draft thesis
• Clarify vague phrases and assertions
• Investigate alternatives to your draft thesis

Consult the example below for suggestions on how to refine your draft thesis statement.

Sample Assignment

Choose an activity and define it as a symbol of American culture. Your essay should cause the reader to think critically about the society which produces and enjoys that activity.

• Ask The phenomenon of drive-in facilities is an interesting symbol of american culture, and these facilities demonstrate significant characteristics of our society.This statement does not fulfill the assignment because it does not require the reader to think critically about society.

Drive-ins are an interesting symbol of American culture because they represent Americans’ significant creativity and business ingenuity.

Among the types of drive-in facilities familiar during the twentieth century, drive-in movie theaters best represent American creativity, not merely because they were the forerunner of later drive-ins and drive-throughs, but because of their impact on our culture: they changed our relationship to the automobile, changed the way people experienced movies, and changed movie-going into a family activity.

While drive-in facilities such as those at fast-food establishments, banks, pharmacies, and dry cleaners symbolize America’s economic ingenuity, they also have affected our personal standards.

While drive-in facilities such as those at fast- food restaurants, banks, pharmacies, and dry cleaners symbolize (1) Americans’ business ingenuity, they also have contributed (2) to an increasing homogenization of our culture, (3) a willingness to depersonalize relationships with others, and (4) a tendency to sacrifice quality for convenience.

This statement is now specific and fulfills all parts of the assignment. This version, like any good thesis, is not self-evident; its points, 1-4, will have to be proven with evidence in the body of the paper. The numbers in this statement indicate the order in which the points will be presented. Depending on the length of the paper, there could be one paragraph for each numbered item or there could be blocks of paragraph for even pages for each one.

Complete the final thesis statement

The bottom line.

As you move through the process of crafting a thesis, you’ll need to remember four things:

• Context matters! Think about your course materials and lectures. Try to relate your thesis to the ideas your instructor is discussing.
• As you go through the process described in this section, always keep your assignment in mind . You will be more successful when your thesis (and paper) responds to the assignment than if it argues a semi-related idea.
• Your thesis statement should be precise, focused, and contestable ; it should predict the sub-theses or blocks of information that you will use to prove your argument.
• Make sure that you keep the rest of your paper in mind at all times. Change your thesis as your paper evolves, because you do not want your thesis to promise more than your paper actually delivers.

In the beginning, the thesis statement was a tool to help you sharpen your focus, limit material and establish the paper’s purpose. When your paper is finished, however, the thesis statement becomes a tool for your reader. It tells the reader what you have learned about your topic and what evidence led you to your conclusion. It keeps the reader on track–well able to understand and appreciate your argument.

Writing Process and Structure

This is an accordion element with a series of buttons that open and close related content panels.

Getting Started with Your Paper

Interpreting Writing Assignments from Your Courses

Generating Ideas for

Creating an Argument

Thesis vs. Purpose Statements

Architecture of Arguments

Working with Sources

Quoting and Paraphrasing Sources

Using Literary Quotations

Citing Sources in Your Paper

Drafting Your Paper

Generating Ideas for Your Paper

Introductions

Paragraphing

Developing Strategic Transitions

Conclusions

Revising Your Paper

Peer Reviews

Reverse Outlines

Revising an Argumentative Paper

Revision Strategies for Longer Projects

Finishing Your Paper

Twelve Common Errors: An Editing Checklist

How to Proofread your Paper

Writing Collaboratively

Collaborative and Group Writing

What this handout is about

This handout will help you understand how paragraphs are formed, how to develop stronger paragraphs, and how to completely and clearly express your ideas.

What is a paragraph?

Paragraphs are the building blocks of papers. Many students define paragraphs in terms of length: a paragraph is a group of at least five sentences, a paragraph is half a page long, etc. In reality, though, the unity and coherence of ideas among sentences is what constitutes a paragraph. A paragraph is defined as “a group of sentences or a single sentence that forms a unit” (Lunsford and Connors 116). Length and appearance do not determine whether a section in a paper is a paragraph. For instance, in some styles of writing, particularly journalistic styles, a paragraph can be just one sentence long. Ultimately, a paragraph is a sentence or group of sentences that support one main idea. In this handout, we will refer to this as the “controlling idea,” because it controls what happens in the rest of the paragraph.

How do I decide what to put in a paragraph?

Before you can begin to determine what the composition of a particular paragraph will be, you must first decide on an argument and a working thesis statement for your paper. What is the most important idea that you are trying to convey to your reader? The information in each paragraph must be related to that idea. In other words, your paragraphs should remind your reader that there is a recurrent relationship between your thesis and the information in each paragraph. A working thesis functions like a seed from which your paper, and your ideas, will grow. The whole process is an organic one—a natural progression from a seed to a full-blown paper where there are direct, familial relationships between all of the ideas in the paper.

The decision about what to put into your paragraphs begins with the germination of a seed of ideas; this “germination process” is better known as brainstorming . There are many techniques for brainstorming; whichever one you choose, this stage of paragraph development cannot be skipped. Building paragraphs can be like building a skyscraper: there must be a well-planned foundation that supports what you are building. Any cracks, inconsistencies, or other corruptions of the foundation can cause your whole paper to crumble.

So, let’s suppose that you have done some brainstorming to develop your thesis. What else should you keep in mind as you begin to create paragraphs? Every paragraph in a paper should be :

• Unified : All of the sentences in a single paragraph should be related to a single controlling idea (often expressed in the topic sentence of the paragraph).
• Clearly related to the thesis : The sentences should all refer to the central idea, or thesis, of the paper (Rosen and Behrens 119).
• Coherent : The sentences should be arranged in a logical manner and should follow a definite plan for development (Rosen and Behrens 119).
• Well-developed : Every idea discussed in the paragraph should be adequately explained and supported through evidence and details that work together to explain the paragraph’s controlling idea (Rosen and Behrens 119).

How do I organize a paragraph?

There are many different ways to organize a paragraph. The organization you choose will depend on the controlling idea of the paragraph. Below are a few possibilities for organization, with links to brief examples:

• Narration : Tell a story. Go chronologically, from start to finish. ( See an example. )
• Description : Provide specific details about what something looks, smells, tastes, sounds, or feels like. Organize spatially, in order of appearance, or by topic. ( See an example. )
• Process : Explain how something works, step by step. Perhaps follow a sequence—first, second, third. ( See an example. )
• Classification : Separate into groups or explain the various parts of a topic. ( See an example. )
• Illustration : Give examples and explain how those examples support your point. (See an example in the 5-step process below.)

Illustration paragraph: a 5-step example

From the list above, let’s choose “illustration” as our rhetorical purpose. We’ll walk through a 5-step process for building a paragraph that illustrates a point in an argument. For each step there is an explanation and example. Our example paragraph will be about human misconceptions of piranhas.

Step 1. Decide on a controlling idea and create a topic sentence

Paragraph development begins with the formulation of the controlling idea. This idea directs the paragraph’s development. Often, the controlling idea of a paragraph will appear in the form of a topic sentence. In some cases, you may need more than one sentence to express a paragraph’s controlling idea.

Controlling idea and topic sentence — Despite the fact that piranhas are relatively harmless, many people continue to believe the pervasive myth that piranhas are dangerous to humans.

Step 2. Elaborate on the controlling idea

Paragraph development continues with an elaboration on the controlling idea, perhaps with an explanation, implication, or statement about significance. Our example offers a possible explanation for the pervasiveness of the myth.

Elaboration — This impression of piranhas is exacerbated by their mischaracterization in popular media.

Step 3. Give an example (or multiple examples)

Paragraph development progresses with an example (or more) that illustrates the claims made in the previous sentences.

Example — For example, the promotional poster for the 1978 horror film Piranha features an oversized piranha poised to bite the leg of an unsuspecting woman.

Step 4. Explain the example(s)

The next movement in paragraph development is an explanation of each example and its relevance to the topic sentence. The explanation should demonstrate the value of the example as evidence to support the major claim, or focus, in your paragraph.

Continue the pattern of giving examples and explaining them until all points/examples that the writer deems necessary have been made and explained. NONE of your examples should be left unexplained. You might be able to explain the relationship between the example and the topic sentence in the same sentence which introduced the example. More often, however, you will need to explain that relationship in a separate sentence.

Explanation for example — Such a terrifying representation easily captures the imagination and promotes unnecessary fear.

Notice that the example and explanation steps of this 5-step process (steps 3 and 4) can be repeated as needed. The idea is that you continue to use this pattern until you have completely developed the main idea of the paragraph.

Step 5. Complete the paragraph’s idea or transition into the next paragraph

The final movement in paragraph development involves tying up the loose ends of the paragraph. At this point, you can remind your reader about the relevance of the information to the larger paper, or you can make a concluding point for this example. You might, however, simply transition to the next paragraph.

Sentences for completing a paragraph — While the trope of the man-eating piranhas lends excitement to the adventure stories, it bears little resemblance to the real-life piranha. By paying more attention to fact than fiction, humans may finally be able to let go of this inaccurate belief.

Finished paragraph

Despite the fact that piranhas are relatively harmless, many people continue to believe the pervasive myth that piranhas are dangerous to humans. This impression of piranhas is exacerbated by their mischaracterization in popular media. For example, the promotional poster for the 1978 horror film Piranha features an oversized piranha poised to bite the leg of an unsuspecting woman. Such a terrifying representation easily captures the imagination and promotes unnecessary fear. While the trope of the man-eating piranhas lends excitement to the adventure stories, it bears little resemblance to the real-life piranha. By paying more attention to fact than fiction, humans may finally be able to let go of this inaccurate belief.

Troubleshooting paragraphs

Problem: the paragraph has no topic sentence.

Imagine each paragraph as a sandwich. The real content of the sandwich—the meat or other filling—is in the middle. It includes all the evidence you need to make the point. But it gets kind of messy to eat a sandwich without any bread. Your readers don’t know what to do with all the evidence you’ve given them. So, the top slice of bread (the first sentence of the paragraph) explains the topic (or controlling idea) of the paragraph. And, the bottom slice (the last sentence of the paragraph) tells the reader how the paragraph relates to the broader argument. In the original and revised paragraphs below, notice how a topic sentence expressing the controlling idea tells the reader the point of all the evidence.

Original paragraph

Piranhas rarely feed on large animals; they eat smaller fish and aquatic plants. When confronted with humans, piranhas’ first instinct is to flee, not attack. Their fear of humans makes sense. Far more piranhas are eaten by people than people are eaten by piranhas. If the fish are well-fed, they won’t bite humans.

Revised paragraph

Although most people consider piranhas to be quite dangerous, they are, for the most part, entirely harmless. Piranhas rarely feed on large animals; they eat smaller fish and aquatic plants. When confronted with humans, piranhas’ first instinct is to flee, not attack. Their fear of humans makes sense. Far more piranhas are eaten by people than people are eaten by piranhas. If the fish are well-fed, they won’t bite humans.

Once you have mastered the use of topic sentences, you may decide that the topic sentence for a particular paragraph really shouldn’t be the first sentence of the paragraph. This is fine—the topic sentence can actually go at the beginning, middle, or end of a paragraph; what’s important is that it is in there somewhere so that readers know what the main idea of the paragraph is and how it relates back to the thesis of your paper. Suppose that we wanted to start the piranha paragraph with a transition sentence—something that reminds the reader of what happened in the previous paragraph—rather than with the topic sentence. Let’s suppose that the previous paragraph was about all kinds of animals that people are afraid of, like sharks, snakes, and spiders. Our paragraph might look like this (the topic sentence is bold):

Like sharks, snakes, and spiders, piranhas are widely feared. Although most people consider piranhas to be quite dangerous, they are, for the most part, entirely harmless . Piranhas rarely feed on large animals; they eat smaller fish and aquatic plants. When confronted with humans, piranhas’ first instinct is to flee, not attack. Their fear of humans makes sense. Far more piranhas are eaten by people than people are eaten by piranhas. If the fish are well-fed, they won’t bite humans.

Problem: the paragraph has more than one controlling idea

If a paragraph has more than one main idea, consider eliminating sentences that relate to the second idea, or split the paragraph into two or more paragraphs, each with only one main idea. Watch our short video on reverse outlining to learn a quick way to test whether your paragraphs are unified. In the following paragraph, the final two sentences branch off into a different topic; so, the revised paragraph eliminates them and concludes with a sentence that reminds the reader of the paragraph’s main idea.

Although most people consider piranhas to be quite dangerous, they are, for the most part, entirely harmless. Piranhas rarely feed on large animals; they eat smaller fish and aquatic plants. When confronted with humans, piranhas’ first instinct is to flee, not attack. Their fear of humans makes sense. Far more piranhas are eaten by people than people are eaten by piranhas. A number of South American groups eat piranhas. They fry or grill the fish and then serve them with coconut milk or tucupi, a sauce made from fermented manioc juices.

Problem: transitions are needed within the paragraph

You are probably familiar with the idea that transitions may be needed between paragraphs or sections in a paper (see our handout on transitions ). Sometimes they are also helpful within the body of a single paragraph. Within a paragraph, transitions are often single words or short phrases that help to establish relationships between ideas and to create a logical progression of those ideas in a paragraph. This is especially likely to be true within paragraphs that discuss multiple examples. Let’s take a look at a version of our piranha paragraph that uses transitions to orient the reader:

Although most people consider piranhas to be quite dangerous, they are, except in two main situations, entirely harmless. Piranhas rarely feed on large animals; they eat smaller fish and aquatic plants. When confronted with humans, piranhas’ instinct is to flee, not attack. But there are two situations in which a piranha bite is likely. The first is when a frightened piranha is lifted out of the water—for example, if it has been caught in a fishing net. The second is when the water level in pools where piranhas are living falls too low. A large number of fish may be trapped in a single pool, and if they are hungry, they may attack anything that enters the water.

In this example, you can see how the phrases “the first” and “the second” help the reader follow the organization of the ideas in the paragraph.

Works consulted

We consulted these works while writing this handout. This is not a comprehensive list of resources on the handout’s topic, and we encourage you to do your own research to find additional publications. Please do not use this list as a model for the format of your own reference list, as it may not match the citation style you are using. For guidance on formatting citations, please see the UNC Libraries citation tutorial . We revise these tips periodically and welcome feedback.

Lunsford, Andrea. 2008. The St. Martin’s Handbook: Annotated Instructor’s Edition , 6th ed. New York: St. Martin’s.

Rosen, Leonard J., and Laurence Behrens. 2003. The Allyn & Bacon Handbook , 5th ed. New York: Longman.

You may reproduce it for non-commercial use if you use the entire handout and attribute the source: The Writing Center, University of North Carolina at Chapel Hill

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Writing an Informative Essay

Informative essays engage readers with new, interesting, and often surprising facts and details about a subject. Informative essays are educational; readers expect to learn something new from them. In fact, much of the reading and writing done in college and the workplace is informative. From textbooks to reports to tutorials like this one, informative writing imparts important and useful information about a topic.

This tutorial refers to the sample informative outline and final essay written by fictional student Paige Turner.

Reasons to Write Informatively

Your purpose for writing and the audience for whom you are writing will impact the depth and breadth of information you provide, but all informative writing aims to present a subject without opinions or bias. Some common reasons to write informatively are to

• report findings that an audience would find interesting,
• present facts that an audience would find useful, and
• communicate information about a person, place, event, issue, or change that would improve an audience’s understanding.

Characteristics of Informative Essays

Informative essays present factual information and do not attempt to sway readers’ opinions about it. Other types of academic and workplace writing do try to influence readers’ opinions:

• Expository essays aim to expose a truth about an issue in order to influence how readers view the issue.
• Persuasive essays aim to influence readers’ opinions, so they will adopt a particular position or take a certain course of action.

Expository and persuasive essays make “arguments.” The only argument an informative essay makes is that something exists, did exist, is happening, or has happened, and the point of the essay is not to convince readers of this but to tell them about it.

• Informative essays seek to enlighten and educate readers, so they can make their own educated opinions and decisions about what to think and how to act.

Strategies for Writing Informatively

Informative essays provide useful information such as facts, examples, and evidence from research in order to help readers understand a topic or see it more clearly. While informative writing does not aim to appeal emotionally to readers in order to change their opinions or behaviors, informative writing should still be engaging to read. Factual information is not necessarily dry or boring. Sometimes facts can be more alarming than fiction!

Writers use various strategies to engage and educate readers. Some strategies include

• introducing the topic with an alarming fact or arresting image;
• asserting what is true or so about the subject in a clear thesis statement;
• organizing the paragraphs logically by grouping related information;
• unifying each paragraph with a topic sentence and controlling idea;
• developing cohesive paragraphs with transition sentences;
• using precise language and terminology appropriate for the topic, purpose, and audience; and
• concluding with a final idea or example that captures the essay’s purpose and leaves a lasting impression.

Five Steps for Getting Started

1. Brainstorm and choose a topic.

• Sample topic : The opioid epidemic in the United States.
• The opiod epidemic or even opiod addiction would would be considered too broad for a single essay, so the next steps aim to narrow this topic down.

2. Next, write a question about the topic that you would like to answer through research.

• Sample question : What major events caused the opioid crisis in the United States?
• This question aims to narrow the topic down to causes of the epidemic in the US.

3. Now go to the Purdue Global Library to find the answers to your research question.

As you begin reading and collecting sources, write down the themes that emerge as common answers. Later, in step four, use the most common answers (or the ones you are most interested in writing and discussing) to construct a thesis statement.

• Sample answers: aggressive marketing, loopholes in prescription drug provider programs, and economic downturn.

4. Next, provide purpose to your paper by creating a thesis statement.

The thesis attempts to frame your research question. The sample thesis below incorporates three of the more common answers for the research question from step two: What caused the opioid crisis in the United States?

• Thesis Statement : Aggressive marketing, loopholes in prescription drug provider programs, and economic downturn contributed to the current opioid crisis in the United States.
• Writing Tip : For additional help with thesis statements, please visit our Writing a Thesis Statement article. For help with writing in 3rd person, see our article on Formal Vs. Informal Writing .

5. Now follow each numbered step in the “Suggested Outline Format and Sample” below.

Sample answers have been provided for “I. Introduction” and “II. First Cause.” A complete sample outline can be seen here. A complete sample informative essay can be seen here.

Suggested Outline Format and Sample

I. INTRODUCTION

A. First provide a topic sentence that introduces the main topic: Sample topic sentence : There is a current prescription pain medication addiction and abuse epidemic possibly caused by an excessive over prescription of these medications.

B. Now provide a couple sentences with evidence to support the main topic: Sample sentence one with evidence to support the main topic : According to Dr. Nora Volkow, Director of National Institute on Drug Abuse (NIDA), in testimony before the 115th Congress, “In 2016, over 11 million Americans misused prescription opioids … and 2.1 million had an opioid use disorder due to prescription opioids” (Federal Efforts to Combat the Opioid Crisis, 2017, p. 2).

C. Sample sentence two with evidence to support the main topic : Volkow indicated “more than 300,000 Americans have died of an opioid overdose” since 2013 (Federal Efforts to Combat the Opioid Crisis, 2017, p.2).

D. Sample sentence three with evidence to support the main topic : According to Perez-Pena (2017), the Center for Disease Control and Prevention reported more than 25,000 people in the United States died in 2015 from overdosing on opioids Fentanyl, Oxycodone, and Hydrocodone.

E. Toward the end of the introduction, include your thesis statement written in the 3rd-person point-of-view: Sample thesis statement : Potential solutions to the growing opioid epidemic may be illuminated by examining how opioid addiction is triggered through aggressive pharmaceutical marketing, how opioid addiction manifests among prescribed patients, and how economic downturns play a role in the increase of opioid addiction.

F. Write down the library sources you can use in this introductory paragraph to help support the main topic.

• Federal Efforts to Combat the Opioid Crisis, 2017
• Perez-Pena, 2017
• Writing Tip : For more help writing an introduction, please refer to this article on introductions and conclusions .

II. FIRST CAUSE

A. First provide a topic sentence that introduces the first cause of the opioid epidemic: Sample topic sentence that introduces the first cause : One issue that helped contribute to the opioid epidemic is aggressive marketing by pharmaceutical manufacturers.

B. Now provide sentences with evidence to support the first cause: Sample sentence one with evidence that supports the first cause : Perez-Pena (2017) concluded that while the healthcare industry was attempting to effectively and efficiently treat patients with chronic pain, pharmaceutical companies were providing funding to prominent doctors, medical societies, and patient advocacy groups in order to win support for a particular drug’s adoption and usage.

C. Sample sentence two with evidence to support the first cause : In fact, pharmaceutical companies continue to spend millions on promotional activities and materials that deny or trivialize any risks of opioid use while at the same time overstating each drug’s benefit (Perez-Pina, 2017).

D. Next, add more information or provide concluding or transitional sentences that foreshadows the upcoming second cause: Sample concluding and transitional sentence that foreshadow the second cause : Although aggressive marketing by pharmaceutical companies played a large role in opioid addiction, patients are to blame too, as many take advantage of holes in the healthcare provider system in order to remedy their addiction.

E. Write down the library sources you can use in this body paragraph to help support the first cause:

• Writing Tip : For more assistance working with sources, please visit the Using Sources page here.

III. SECOND CAUSE

A. First provide a topic sentence that introduces the second cause.

B. Now provide sentences with evidence to support the second cause.

C. Next, add more information or provide concluding or transitional sentences that foreshadows the upcoming third cause.

D. Write down the library sources you can use in this body paragraph to help support the second cause:

• Writing Tip : Listen to Writing Powerful Sentences for information and features of effective writing.

IV. THIRD CAUSE

A. First provide a topic sentence that introduces the third cause.

B. Now provide sentences with evidence to support the third cause.

C. Next, add more information or provide a concluding sentence or two.

D. Write down the library sources you can use in this body paragraph to help support the third cause:

V. CONCLUSION: Summary of key points and evidence discussed.

• Writing Tip : For more help writing a conclusion, refer to this podcast on endings .
• Writing Tip : Have a question? Leave a comment below or Purdue Global students, click here to access the Purdue Global Writing Center tutoring platform and available staff.
• Writing Tip : Ready to have someone look at your paper? Purdue Global students, click here to submit your assignment for feedback through our video paper review service.

See a Sample Informative Essay Outline here .

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dang bro i got an A

Having faith with all this mentioned, that i will pass my english class at a college. Thank you for posting.

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6.2 Effective Means for Writing a Paragraph

Learning objectives.

• Identify characteristics of a good topic sentence.
• Identify the three parts of a developed paragraph.
• Apply knowledge of topic sentences and parts of a developed paragraph in an assignment.

Now that you have identified common purposes for writing and learned how to select appropriate content for a particular audience, you can think about the structure of a paragraph in greater detail. Composing an effective paragraph requires a method similar to building a house. You may have the finest content, or materials, but if you do not arrange them in the correct order, then the final product will not hold together very well.

A strong paragraph contains three distinct components:

• Topic sentence . The topic sentence is the main idea of the paragraph.
• Body . The body is composed of the supporting sentences that develop the main point.
• Conclusion . The conclusion is the final sentence that summarizes the main point.

The foundation of a good paragraph is the topic sentence, which expresses the main idea of the paragraph. The topic sentence relates to the thesis, or main point, of the essay (see Chapter 9 “Writing Essays: From Start to Finish” for more information about thesis statements) and guides the reader by signposting what the paragraph is about. All the sentences in the rest of the paragraph should relate to the topic sentence.

This section covers the major components of a paragraph and examines how to develop an effective topic sentence.

Developing a Topic Sentence

Pick up any newspaper or magazine and read the first sentence of an article. Are you fairly confident that you know what the rest of the article is about? If so, you have likely read the topic sentence. An effective topic sentence combines a main idea with the writer’s personal attitude or opinion. It serves to orient the reader and provides an indication of what will follow in the rest of the paragraph. Read the following example.

Creating a national set of standards for math and English education will improve student learning in many states.

This topic sentence declares a favorable position for standardizing math and English education. After reading this sentence, a reader might reasonably expect the writer to provide supporting details and facts as to why standardizing math and English education might improve student learning in many states. If the purpose of the essay is actually to evaluate education in only one particular state, or to discuss math or English education specifically, then the topic sentence is misleading.

When writing a draft of an essay, allow a friend or colleague to read the opening line of your first paragraph. Ask your reader to predict what your paper will be about. If he or she is unable to guess your topic accurately, you should consider revising your topic sentence so that it clearly defines your purpose in writing.

Main Idea versus Controlling Idea

Topic sentences contain both a main idea (the subject, or topic that the writer is discussing) and a controlling idea (the writer’s specific stance on that subject). Just as a thesis statement includes an idea that controls a document’s focus (as you will read about in Chapter 8 “The Writing Process: How Do I Begin?” ), a topic sentence must also contain a controlling idea to direct the paragraph. Different writers may use the same main idea but can steer their paragraph in a number of different directions according to their stance on the subject. Read the following examples.

• Marijuana is a destructive influence on teens and causes long-term brain damage.
• The antinausea properties in marijuana are a lifeline for many cancer patients.
• Legalizing marijuana would create a higher demand for Class A and Class B drugs.

Although the main idea—marijuana—is the same in all three topic sentences, the controlling idea differs depending on the writer’s viewpoint.

Circle the main idea and underline the controlling idea in each of the following topic sentences.

• Exercising three times a week is the only way to maintain good physical health.
• Sexism and racism are still rampant in today’s workplace.
• Raising the legal driving age to twenty-one would decrease road traffic accidents.
• Owning a business is the only way to achieve financial success.
• Dog owners should be prohibited from taking their pets on public beaches.

Characteristics of a Good Topic Sentence

Five characteristics define a good topic sentence:

A good topic sentence provides an accurate indication of what will follow in the rest of the paragraph.

Weak example. People rarely give firefighters the credit they deserve for such a physically and emotionally demanding job. (The paragraph is about a specific incident that involved firefighters; therefore, this topic sentence is too general.)

Stronger example. During the October riots, Unit 3B went beyond the call of duty. (This topic sentence is more specific and indicates that the paragraph will contain information about a particular incident involving Unit 3B.)

A good topic sentence contains both a topic and a controlling idea or opinion.

Weak example. In this paper, I am going to discuss the rising suicide rate among young professionals. (This topic sentence provides a main idea, but it does not present a controlling idea, or thesis.)

Stronger example. The rising suicide rate among young professionals is a cause for immediate concern. (This topic sentence presents the writer’s opinion on the subject of rising suicide rates among young professionals.)

A good topic sentence is clear and easy to follow.

Weak example. In general, writing an essay, thesis, or other academic or nonacademic document is considerably easier and of much higher quality if you first construct an outline, of which there are many different types. (This topic sentence includes a main idea and a controlling thesis, but both are buried beneath the confusing sentence structure and unnecessary vocabulary. These obstacles make it difficult for the reader to follow.)

Stronger example. Most forms of writing can be improved by first creating an outline. (This topic sentence cuts out unnecessary verbiage and simplifies the previous statement, making it easier for the reader to follow.)

A good topic sentence does not include supporting details.

Weak example. Salaries should be capped in baseball for many reasons, most importantly so we don’t allow the same team to win year after year. (This topic sentence includes a supporting detail that should be included later in the paragraph to back up the main point.)

Stronger example. Introducing a salary cap would improve the game of baseball for many reasons. (This topic sentence omits the additional supporting detail so that it can be expanded upon later in the paragraph.)

A good topic sentence engages the reader by using interesting vocabulary.

Weak example. The military deserves better equipment. (This topic sentence includes a main idea and a controlling thesis, but the language is bland and unexciting.)

Stronger example. The appalling lack of resources provided to the military is outrageous and requires our immediate attention. (This topic sentence reiterates the same idea and controlling thesis, but adjectives such as appalling and immediate better engage the reader. These words also indicate the writer’s tone.)

Choose the most effective topic sentence from the following sentence pairs.

a. This paper will discuss the likelihood of the Democrats winning the next election.

b. To boost their chances of winning the next election, the Democrats need to listen to public opinion.

a. The unrealistic demands of union workers are crippling the economy for three main reasons.

b. Union workers are crippling the economy because companies are unable to remain competitive as a result of added financial pressure.

a. Authors are losing money as a result of technological advances.

b. The introduction of new technology will devastate the literary world.

a. Rap music is produced by untalented individuals with oversized egos.

b. This essay will consider whether talent is required in the rap music industry.

Using the tips on developing effective topic sentences in this section, create a topic sentence on each of the following subjects. Remember to include a controlling idea as well as a main idea. Write your responses on your own sheet of paper.

An endangered species

____________________________________________

The cost of fuel

The legal drinking age

A controversial film or novel

Writing at Work

When creating a workplace document, use the “top-down” approach—keep the topic sentence at the beginning of each paragraph so that readers immediately understand the gist of the message. This method saves busy colleagues precious time and effort trying to figure out the main points and relevant details.

Headings are another helpful tool. In a text-heavy document, break up each paragraph with individual headings. These serve as useful navigation aids, enabling colleagues to skim through the document and locate paragraphs that are relevant to them.

Developing Paragraphs That Use Topic Sentences, Supporting Ideas, and Transitions Effectively

Learning how to develop a good topic sentence is the first step toward writing a solid paragraph. Once you have composed your topic sentence, you have a guideline for the rest of the paragraph. To complete the paragraph, a writer must support the topic sentence with additional information and summarize the main point with a concluding sentence.

This section identifies the three major structural parts of a paragraph and covers how to develop a paragraph using transitional words and phrases.

Identifying Parts of a Paragraph

An effective paragraph contains three main parts: a topic sentence, the body, and the concluding sentence. A topic sentence is often the first sentence of a paragraph. This chapter has already discussed its purpose—to express a main idea combined with the writer’s attitude about the subject. The body of the paragraph usually follows, containing supporting details. Supporting sentences help explain, prove, or enhance the topic sentence. The concluding sentence is the last sentence in the paragraph. It reminds the reader of the main point by restating it in different words.

Figure 6.2 Paragraph Structure Graphic Organizer

Read the following paragraph. The topic sentence is underlined for you.

After reading the new TV guide this week I had just one thought—why are we still being bombarded with reality shows? This season, the plague of reality television continues to darken our airwaves. Along with the return of viewer favorites, we are to be cursed with yet another mindless creation. Prisoner follows the daily lives of eight suburban housewives who have chosen to be put in jail for the purposes of this fake psychological experiment. A preview for the first episode shows the usual tears and tantrums associated with reality television. I dread to think what producers will come up with next season, but if any of them are reading this blog—stop it! We’ve had enough reality television to last us a lifetime!

The first sentence of this paragraph is the topic sentence. It tells the reader that the paragraph will be about reality television shows, and it expresses the writer’s distaste for these shows through the use of the word bombarded .

Each of the following sentences in the paragraph supports the topic sentence by providing further information about a specific reality television show. The final sentence is the concluding sentence. It reiterates the main point that viewers are bored with reality television shows by using different words from the topic sentence.

Paragraphs that begin with the topic sentence move from the general to the specific. They open with a general statement about a subject (reality shows) and then discuss specific examples (the reality show Prisoner ). Most academic essays contain the topic sentence at the beginning of the first paragraph.

Now take a look at the following paragraph. The topic sentence is underlined for you.

Last year, a cat traveled 130 miles to reach its family, who had moved to another state and had left their pet behind. Even though it had never been to their new home, the cat was able to track down its former owners. A dog in my neighborhood can predict when its master is about to have a seizure. It makes sure that he does not hurt himself during an epileptic fit. Compared to many animals, our own senses are almost dull.

The last sentence of this paragraph is the topic sentence. It draws on specific examples (a cat that tracked down its owners and a dog that can predict seizures) and then makes a general statement that draws a conclusion from these examples (animals’ senses are better than humans’). In this case, the supporting sentences are placed before the topic sentence and the concluding sentence is the same as the topic sentence.

This technique is frequently used in persuasive writing. The writer produces detailed examples as evidence to back up his or her point, preparing the reader to accept the concluding topic sentence as the truth.

Sometimes, the topic sentence appears in the middle of a paragraph. Read the following example. The topic sentence is underlined for you.

For many years, I suffered from severe anxiety every time I took an exam. Hours before the exam, my heart would begin pounding, my legs would shake, and sometimes I would become physically unable to move. Last year, I was referred to a specialist and finally found a way to control my anxiety—breathing exercises. It seems so simple, but by doing just a few breathing exercises a couple of hours before an exam, I gradually got my anxiety under control. The exercises help slow my heart rate and make me feel less anxious. Better yet, they require no pills, no equipment, and very little time. It’s amazing how just breathing correctly has helped me learn to manage my anxiety symptoms.

In this paragraph, the underlined sentence is the topic sentence. It expresses the main idea—that breathing exercises can help control anxiety. The preceding sentences enable the writer to build up to his main point (breathing exercises can help control anxiety) by using a personal anecdote (how he used to suffer from anxiety). The supporting sentences then expand on how breathing exercises help the writer by providing additional information. The last sentence is the concluding sentence and restates how breathing can help manage anxiety.

Placing a topic sentence in the middle of a paragraph is often used in creative writing. If you notice that you have used a topic sentence in the middle of a paragraph in an academic essay, read through the paragraph carefully to make sure that it contains only one major topic. To read more about topic sentences and where they appear in paragraphs, see Chapter 8 “The Writing Process: How Do I Begin?” .

Implied Topic Sentences

Some well-organized paragraphs do not contain a topic sentence at all. Instead of being directly stated, the main idea is implied in the content of the paragraph. Read the following example:

Heaving herself up the stairs, Luella had to pause for breath several times. She let out a wheeze as she sat down heavily in the wooden rocking chair. Tao approached her cautiously, as if she might crumble at the slightest touch. He studied her face, like parchment; stretched across the bones so finely he could almost see right through the skin to the decaying muscle underneath. Luella smiled a toothless grin.

Although no single sentence in this paragraph states the main idea, the entire paragraph focuses on one concept—that Luella is extremely old. The topic sentence is thus implied rather than stated. This technique is often used in descriptive or narrative writing. Implied topic sentences work well if the writer has a firm idea of what he or she intends to say in the paragraph and sticks to it. However, a paragraph loses its effectiveness if an implied topic sentence is too subtle or the writer loses focus.

Avoid using implied topic sentences in an informational document. Readers often lose patience if they are unable to quickly grasp what the writer is trying to say. The clearest and most efficient way to communicate in an informational document is to position the topic sentence at the beginning of the paragraph.

Identify the topic sentence, supporting sentences, and concluding sentence in the following paragraph.

Collaboration

Please share with a classmate and compare your answers.

Supporting Sentences

If you think of a paragraph as a hamburger, the supporting sentences are the meat inside the bun. They make up the body of the paragraph by explaining, proving, or enhancing the controlling idea in the topic sentence. Most paragraphs contain three to six supporting sentences depending on the audience and purpose for writing. A supporting sentence usually offers one of the following:

Sentence: The refusal of the baby boom generation to retire is contributing to the current lack of available jobs.

Sentence: Many families now rely on older relatives to support them financially.

Sentence: Nearly 10 percent of adults are currently unemployed in the United States.

Sentence: “We will not allow this situation to continue,” stated Senator Johns.

Sentence: Last year, Bill was asked to retire at the age of fifty-five.

The type of supporting sentence you choose will depend on what you are writing and why you are writing. For example, if you are attempting to persuade your audience to take a particular position you should rely on facts, statistics, and concrete examples, rather than personal opinions. Read the following example:

There are numerous advantages to owning a hybrid car. (Topic sentence)

First, they get 20 percent to 35 percent more miles to the gallon than a fuel-efficient gas-powered vehicle. (Supporting sentence 1: statistic)

Second, they produce very few emissions during low speed city driving. (Supporting sentence 2: fact)

Because they do not require gas, hybrid cars reduce dependency on fossil fuels, which helps lower prices at the pump. (Supporting sentence 3: reason)

Alex bought a hybrid car two years ago and has been extremely impressed with its performance. (Supporting sentence 4: example)

“It’s the cheapest car I’ve ever had,” she said. “The running costs are far lower than previous gas powered vehicles I’ve owned.” (Supporting sentence 5: quotation)

Given the low running costs and environmental benefits of owning a hybrid car, it is likely that many more people will follow Alex’s example in the near future. (Concluding sentence)

To find information for your supporting sentences, you might consider using one of the following sources:

• Reference book
• Encyclopedia
• Biography/autobiography
• Newspaper/magazine
• Previous experience
• Personal research

To read more about sources and research, see Chapter 11 “Writing from Research: What Will I Learn?” .

When searching for information on the Internet, remember that some websites are more reliable than others. websites ending in .gov or .edu are generally more reliable than websites ending in .com or .org. Wikis and blogs are not reliable sources of information because they are subject to inaccuracies.

Concluding Sentences

An effective concluding sentence draws together all the ideas you have raised in your paragraph. It reminds readers of the main point—the topic sentence—without restating it in exactly the same words. Using the hamburger example, the top bun (the topic sentence) and the bottom bun (the concluding sentence) are very similar. They frame the “meat” or body of the paragraph. Compare the topic sentence and concluding sentence from the previous example:

Topic sentence: There are numerous advantages to owning a hybrid car.

Concluding sentence: Given the low running costs and environmental benefits of owning a hybrid car, it is likely that many more people will follow Alex’s example in the near future.

Notice the use of the synonyms advantages and benefits . The concluding sentence reiterates the idea that owning a hybrid is advantageous without using the exact same words. It also summarizes two examples of the advantages covered in the supporting sentences: low running costs and environmental benefits.

You should avoid introducing any new ideas into your concluding sentence. A conclusion is intended to provide the reader with a sense of completion. Introducing a subject that is not covered in the paragraph will confuse the reader and weaken your writing.

A concluding sentence may do any of the following:

Restate the main idea.

Example: Childhood obesity is a growing problem in the United States.

Summarize the key points in the paragraph.

Example: A lack of healthy choices, poor parenting, and an addiction to video games are among the many factors contributing to childhood obesity.

Draw a conclusion based on the information in the paragraph.

Example: These statistics indicate that unless we take action, childhood obesity rates will continue to rise.

Make a prediction, suggestion, or recommendation about the information in the paragraph.

Example: Based on this research, more than 60 percent of children in the United States will be morbidly obese by the year 2030 unless we take evasive action.

Offer an additional observation about the controlling idea.

Example: Childhood obesity is an entirely preventable tragedy.

On your own paper, write one example of each type of concluding sentence based on a topic of your choice.

Transitions

A strong paragraph moves seamlessly from the topic sentence into the supporting sentences and on to the concluding sentence. To help organize a paragraph and ensure that ideas logically connect to one another, writers use transitional words and phrases. A transition is a connecting word that describes a relationship between ideas. Take another look at the earlier example:

There are numerous advantages to owning a hybrid car. First , they get 20 percent to 35 percent more miles to the gallon than a fuel-efficient gas-powered vehicle. Second , they produce very few emissions during low speed city driving. Because they do not require gas, hybrid cars reduce dependency on fossil fuels, which helps lower prices at the pump. Alex bought a hybrid car two years ago and has been extremely impressed with its performance. “It’s the cheapest car I’ve ever had,” she said. “The running costs are far lower than previous gas-powered vehicles I’ve owned.” Given the low running costs and environmental benefits of owning a hybrid car, it is likely that many more people will follow Alex’s example in the near future.

Each of the underlined words is a transition word. Words such as first and second are transition words that show sequence or clarify order. They help organize the writer’s ideas by showing that he or she has another point to make in support of the topic sentence. Other transition words that show order include third , also , and furthermore .

The transition word because is a transition word of consequence that continues a line of thought. It indicates that the writer will provide an explanation of a result. In this sentence, the writer explains why hybrid cars will reduce dependency on fossil fuels (because they do not require gas). Other transition words of consequence include as a result , so that , since , or for this reason .

To include a summarizing transition in her concluding sentence, the writer could rewrite the final sentence as follows:

In conclusion, given the low running costs and environmental benefits of owning a hybrid car, it is likely that many more people will follow Alex’s example in the near future.

The following chart provides some useful transition words to connect supporting sentences and concluding sentences. See Chapter 8 “The Writing Process: How Do I Begin?” for a more comprehensive look at transitional words and phrases.

Table 6.1 Useful Transitional Words and Phrases

Using your own paper, write a paragraph on a topic of your choice. Be sure to include a topic sentence, supporting sentences, and a concluding sentence and to use transitional words and phrases to link your ideas together.

Transitional words and phrases are useful tools to incorporate into workplace documents. They guide the reader through the document, clarifying relationships between sentences and paragraphs so that the reader understands why they have been written in that particular order.

For example, when writing an instructional memo, it may be helpful to consider the following transitional words and phrases: before you begin , first , next , then , finally , after you have completed . Using these transitions as a template to write your memo will provide readers with clear, logical instructions about a particular process and the order in which steps are supposed to be completed.

Key Takeaways

• A good paragraph contains three distinct components: a topic sentence, body, and concluding sentence.
• The topic sentence expresses the main idea of the paragraph combined with the writer’s attitude or opinion about the topic.
• Good topic sentences contain both a main idea and a controlling idea, are clear and easy to follow, use engaging vocabulary, and provide an accurate indication of what will follow in the rest of the paragraph.
• Topic sentences may be placed at the beginning, middle, or end of a paragraph. In most academic essays, the topic sentence is placed at the beginning of a paragraph.
• Supporting sentences help explain, prove, or enhance the topic sentence by offering facts, reasons, statistics, quotations, or examples.
• Concluding sentences summarize the key points in a paragraph and reiterate the main idea without repeating it word for word.
• Transitional words and phrases help organize ideas in a paragraph and show how these ideas relate to one another.

Writing for Success Copyright © 2015 by University of Minnesota is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License , except where otherwise noted.

Informative Essay — Purpose, Structure, and Examples

What is informative writing?

Informative writing educates the reader about a certain topic. An informative essay may explain new information, describe a process, or clarify a concept. The provided information is objective, meaning the writing focuses on presentation of fact and should not contain personal opinion or bias.

Informative writing includes description, process, cause and effect, comparison, and problems and possible solutions:

Describes a person, place, thing, or event using descriptive language that appeals to readers’ senses

Explains the process to do something or how something was created

Discusses the relationship between two things, determining how one ( cause ) leads to the other ( effect ); the effect needs to be based on fact and not an assumption

Identifies the similarities and differences between two things; does not indicate that one is better than the other

Details a problem and presents various possible solutions ; the writer does not suggest one solution is more effective than the others

Purpose of informative writing

The purpose of an informative essay depends upon the writer’s motivation, but may be to share new information, describe a process, clarify a concept, explain why or how, or detail a topic’s intricacies.

Informative essays may introduce readers to new information .

Summarizing a scientific/technological study

Outlining the various aspects of a religion

Providing information on a historical period

Describe a process or give step-by-step details of a procedure.

How to write an informational essay

How to construct an argument

How to apply for a job

Clarify a concept and offer details about complex ideas.

Explain why or how something works the way that it does.

Describe how the stock market impacts the economy

Illustrate why there are high and low tides

Detail how the heart functions

Offer information on the smaller aspects or intricacies of a larger topic.

Identify the importance of the individual bones in the body

Outlining the Dust Bowl in the context of the Great Depression

Explaining how bees impact the environment

How to write an informative essay

Regardless of the type of information, the informative essay structure typically consists of an introduction, body, and conclusion.

Introduction

Background information

Explanation of evidence

Restated thesis

Review of main ideas

Closing statement

Informative essay introduction

When composing the introductory paragraph(s) of an informative paper, include a hook, introduce the topic, provide background information, and develop a good thesis statement.

If the hook or introduction creates interest in the first paragraph, it will draw the readers’ attention and make them more receptive to the essay writer's ideas. Some of the most common techniques to accomplish this include the following:

Emphasize the topic’s importance by explaining the current interest in the topic or by indicating that the subject is influential.

Use pertinent statistics to give the paper an air of authority.

A surprising statement can be shocking; sometimes it is disgusting; sometimes it is joyful; sometimes it is surprising because of who said it.

An interesting incident or anecdote can act as a teaser to lure the reader into the remainder of the essay. Be sure that the device is appropriate for the informative essay topic and focus on what is to follow.

Directly introduce the topic of the essay.

Provide the reader with the background information necessary to understand the topic. Don’t repeat this information in the body of the essay; it should help the reader understand what follows.

Identify the overall purpose of the essay with the thesis (purpose statement). Writers can also include their support directly in the thesis, which outlines the structure of the essay for the reader.

Informative essay body paragraphs

Each body paragraph should contain a topic sentence, evidence, explanation of evidence, and a transition sentence.

A good topic sentence should identify what information the reader should expect in the paragraph and how it connects to the main purpose identified in the thesis.

Provide evidence that details the main point of the paragraph. This includes paraphrasing, summarizing, and directly quoting facts, statistics, and statements.

Explain how the evidence connects to the main purpose of the essay.

Place transitions at the end of each body paragraph, except the last. There is no need to transition from the last support to the conclusion. A transition should accomplish three goals:

Tell the reader where you were (current support)

Tell the reader where you are going (next support)

Relate the paper’s purpose

Informative essay conclusion

Incorporate a rephrased thesis, summary, and closing statement into the conclusion of an informative essay.

Rephrase the purpose of the essay. Do not just repeat the purpose statement from the thesis.

Summarize the main idea found in each body paragraph by rephrasing each topic sentence.

End with a clincher or closing statement that helps readers answer the question “so what?” What should the reader take away from the information provided in the essay? Why should they care about the topic?

Informative essay example

The following example illustrates a good informative essay format:

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2.6: Writing Paragraphs

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Writing Paragraphs

Introduction

Imagine reading one long block of text, with each idea blurring into the next. You are likely to lose interest in a piece of writing that is disorganized and spans many pages without breaks.

Paragraphs separate ideas into logical, manageable chunks, each paragraph focusing on only one main idea and presenting coherent sentences to support that one point. Because all the sentences in one paragraph support the same point, a paragraph may stand on its own. For most types of informative or persuasive academic writing, writers find it helpful to think of the paragraph analogous to an essay, as each is controlled by a main idea or point, and that idea is developed by an organized group of more specific ideas.

Thus, the thesis of the essay is analogous to the topic sentence of a paragraph, just as the supporting sentences in a paragraph are analogous to the supporting paragraphs in an essay.

In essays, each supporting paragraph adds another related main idea to support the writer's thesis, or controlling idea. Each related supporting idea is developed with facts, examples, and other details that explain it. By exploring and refining one idea at a time, writers build a strong case for their thesis.

Effective paragraphing makes the difference between a satisfying essay that readers can easily process and one that requires readers to mentally organize themselves. Thoughtful organization and development of each body paragraph leads to an effectively focused, developed, and coherent essay.

An effective paragraph contains three main parts:

• a topic sentence
• body, supporting sentences
• a concluding sentence

In informative and persuasive writing, the topic sentence is usually the first sentence or second sentence of a paragraph and expresses its main idea, followed by supporting sentences that help explain, prove, or enhance the topic sentence.

In narrative and descriptive paragraphs, however, topic sentences may be implied rather than explicitly stated, with all supporting sentences working to create the main idea. If the paragraph contains a concluding sentence, it is the last sentence in the paragraph and reminds the reader of the main point by restating it in different words. The following figure illustrates the most common paragraph structure for informative and persuasive college essays.

Paragraph Structure

Graphic Organizer

The number of supporting sentences varies according to the paragraph's purpose and the writer's sentence structure.

Creating Focused Paragraphs with Topic Sentences

The foundation of a paragraph is the topic sentence, which expresses the main idea or point of the paragraph.

The topic sentence functions two ways:

• it clearly refers to and supports the essay's thesis, and
• it indicates what will follow in the rest of the paragraph.

As the unifying sentence for the paragraph, it is the most general sentence, whereas all supporting sentences provide different types of more specific information, such as facts, details, or examples.

An effective topic sentence has the following characteristics:

A topic sentence provides an accurate indication of what will follow in the rest of the paragraph.

A good topic sentence is the most general sentence in the paragraph and thus does not include supporting details.

A good topic sentence is clear and easy to follow.

Location of Topic Sentences

A topic sentence can appear anywhere within a paragraph or can be implied (such as in narrative or descriptive writing).

In college-level expository or persuasive writing, placing an explicit topic sentence at the beginning of each paragraph (the first or second sentence) makes it easier for readers to follow the essay and for writers to stay on topic, but writers should be aware of variations and maintain the flexibility to adapt to different writing projects.

The following examples illustrate varying locations for the topic sentence. In each example, the topic sentence is underlined.

Topic Sentence Begins the Paragraph (General to Specific)

After reading the new TV guide this week, I wondered why we are still being bombarded with reality shows, a plague that continues to darken our airwaves. Along with the return of viewer favorites, we are to be cursed with yet another mindless creation. "Prisoner" follows the daily lives of eight suburban housewives who have chosen to be put in jail for the purposes of this fake psychological experiment. A preview for the first episode shows the usual tears and tantrums associated with reality television. I dread to think what producers will come up with next season and hope that other viewers will express their criticism. These producers must stop the constant stream of meaningless shows without plotlines. We've had enough reality television to last us a lifetime!

The first sentence tells readers that the paragraph will be about reality television shows, and it expresses the writer's distaste for these shows through the use of the word "bombarded."

Each of the following sentences in the paragraph supports the topic sentence by providing further information about a specific reality television show and why the writer finds it unappealing. The final sentence is the concluding sentence. It reiterates the main point that viewers are bored with reality television shows by using different words from the topic sentence.

Paragraphs that begin with the topic sentence move from the general to the specific. They open with a general statement about a subject (reality shows) and then discuss specific examples (the reality show "Prisoner"). Most academic essays contain the topic sentence at the beginning of the first paragraph.

Topic Sentence Ends the Paragraph (Specific to General)

Last year, a cat traveled 130 miles to reach its family, who had moved to another state and had left their pet behind. Even though it had never been to their new home, the cat was able to track down its former owners. A dog in my neighborhood can predict when its master is about to have a seizure. It makes sure that he does not hurt himself during an epileptic fit. Compared to many animals, our own senses are almost dull.

The last sentence of this paragraph is the topic sentence. It draws on specific examples (a cat that tracked down its owners and a dog that can predict seizures) and then makes a general statement that draws a conclusion from these examples (animals' senses are better than humans'). In this case, the supporting sentences are placed before the topic sentence and the concluding sentence is the same as the topic sentence.

This technique is frequently used in persuasive writing. The writer produces detailed examples as evidence to back up his or her point, preparing the reader to accept the concluding topic sentence as the truth.

When the Topic Sentence Appears in the Middle of the Paragraph

For many years, I suffered from severe anxiety every time I took an exam. Hours before the exam, my heart would begin pounding, my legs would shake, and sometimes I would become physically unable to move. Last year, I was referred to a specialist and finally found a way to control my anxiety--breathing exercises. It seems so simple, but by doing just a few breathing exercises a couple of hours before an exam, I gradually got my anxiety under control. The exercises help slow my heart rate and make me feel less anxious. Better yet, they require no pills, no equipment, and very little time. It's amazing how just breathing correctly has helped me learn to manage my anxiety symptoms.

In this paragraph, the highlighted sentence is the topic sentence. It expresses the main idea: that breathing exercises can help control anxiety. The preceding sentences enable the writer to build up to his main point (breathing exercises can help control anxiety) by using a personal anecdote (how he used to suffer from anxiety). The supporting sentences then expand on how breathing exercises help the writer by providing additional information. The last sentence is the concluding sentence and restates how breathing can help manage anxiety.

Placing a topic sentence in the middle of a paragraph is often used in creative writing. If you notice that you have used a topic sentence in the middle of a paragraph in an academic essay, read through the paragraph carefully to make sure that it contains only one major topic.

Implied Topic Sentences

Some well-organized paragraphs do not contain a topic sentence at all, a technique often used in descriptive and narrative writing. Instead of being directly stated, the main idea is implied in the content of the paragraph, as in the following narrative paragraph:

Heaving herself up the stairs, Luella had to pause for breath several times. She let out a wheeze as she sat down heavily in the wooden rocking chair. Tao approached her cautiously, as if she might crumble at the slightest touch. He studied her face, like parchment, stretched across the bones so finely he could almost see right through the skin to the decaying muscle underneath. Luella smiled a toothless grin.

Although no single sentence in this paragraph states the main idea, the entire paragraph focuses on one concept--that Luella is extremely old. The topic sentence is thus implied rather than stated so that all the details in the paragraph can work together to convey the dominant impression of Luella's age. In a paragraph such as this one, an explicit topic sentence would seem awkward and heavy-handed. Implied topic sentences work well if the writer has a firm idea of what he or she intends to say in the paragraph and sticks to it. However, a paragraph loses its effectiveness if an implied topic sentence is too subtle or the writer loses focus.

Exercise: Choose the Most Effective Topic Sentence

In each of the following sentence pairs, choose the more effective topic sentence.

• This paper will discuss the likelihood of the Democrats winning the next election.
• To boost their chances of winning the next election, the Democrats need to listen to public opinion.
• The unrealistic demands of union workers are crippling the economy for three main reasons.
• Union workers are crippling the economy because companies are unable to remain competitive as a result of added financial pressure.
• Authors are losing money as a result of technological advances.
• The introduction of new technology will devastate the literary world.
• Rap music is produced by untalented individuals with oversized egos.
• This essay will consider whether talent is required in the rap music industry.

Exercise: Evaluating Topic Sentences

Read the following statements and evaluate each as a topic sentence. Say whether the sentence is Good, Not-Good, or Not a Sentence.

• Exercising three times a week is healthy.
• Sexism and racism exist in today's workplace.
• I think we should raise the legal driving age.
• Owning a business.
• There are too many dogs on the public beach.

Create a Topic Sentence

Create a topic sentence on each of the following subjects. Write your responses on your own sheet of paper.

• An endangered species
• The cost of fuel
• The legal drinking age
• A controversial film or novel.

Developing Paragraphs

Writers often want to know how many words a paragraph should contain, and the answer is that a paragraph should develop the idea, point, or impression completely enough to satisfy the writer and readers.

Depending on their function, paragraphs can vary in length from one or two sentences, to over a page; however, in most college assignments, successfully developed paragraphs usually contain approximately one hundred to two hundred and fifty words and span one-fourth to two-thirds of a typed page.

A series of short paragraphs in an academic essay can seem choppy and unfocused, whereas paragraphs that are one page or longer can tire readers. Giving readers a paragraph break on each page helps them maintain focus.

This advice does not mean, of course, that composing a paragraph of a particular number of words or sentences guarantees an effective paragraph. Writers must provide enough supporting sentences within paragraphs to develop the topic sentence and simultaneously carry forward the essay's main idea.

For example: In a descriptive paragraph about a room in the writer's childhood home, a length of two or three sentences is unlikely to contain enough details to create a picture of the room in the reader's mind, and it will not contribute in conveying the meaning of the place.

In contrast, a half page paragraph, full of carefully selected, vivid, specific details and comparisons provides a fuller impression and engages the reader's interest and imagination.

Descriptive Paragraphs

In descriptive or narrative paragraphs, supporting sentences present details and actions in vivid, specific language in objective or subjective ways, appealing to the readers' senses to make them see and experience the subject.

In addition, in some sentences, writers make comparisons that bring together or substitute the familiar with the unfamiliar, thus enhancing and adding depth to the description of the incident, place, person, or idea.

Persuasive Paragraphs

In a persuasive essay about raising the wage for certified nursing assistants, a paragraph might focus on the expectations and duties of the job, comparing them to that of a registered nurse.

Needless to say, a few sentences that simply list the certified nurse's duties will not give readers a complete enough idea of what these healthcare professionals do. If readers do not have plenty of information about the duties and the writer's experience in performing them for what she considers inadequate pay, the paragraph fails to do its part in convincing readers that the pay is inadequate and should be increased.

Informative or Persuasive Paragraphs

In informative or persuasive writing, a supporting sentence usually offers one of the following:

• Reason: The refusal of the baby boom generation to retire is contributing to the current lack of available jobs.
• Fact: Many families now rely on older relatives to support them financially.
• Statistic: Nearly 10 percent of adults are currently unemployed in the United States.
• Quotation: "We will not allow this situation to continue," stated Senator Johns.
• Example: Last year, Bill was asked to retire at the age of fifty-five.

The type of supporting sentence you choose will depend on what you are writing and why you are writing.

For example, if you are attempting to persuade your audience to take a particular position, you should rely on facts, statistics, and concrete examples, rather than personal opinions.

Personal testimony in the form of an extended example can be used in conjunction with the other types of support.

Consider the elements in the following paragraph:

Sometimes the writing situation does not allow for research to add specific facts or other supporting information, but paragraphs can be developed easily with examples from the writer's own experience.

Farheya, a student in a freshman English Composition class, quickly drafted an essay during a timed writing assignment in class. To practice improving paragraph development, she selected the body paragraph below to add support:

Topic: Would you be better off if you didn't own a television? Discuss.

Original Paragraph:

Lack of ownership of a television set is also a way to preserve innocence, and keep the exposure towards anything inappropriate at bay. From simply watching a movie, I have seen things I shouldn't have, no matter how fast I switch the channel. Television shows not only display physical indecency, but also verbal. Many times movies do voice-overs of profane words, but they also leave a few words uncensored. Since all ages can flip through and see or hear such things, television can be toxic for the mind, and without it I wouldn't have to worry about what I may accidentally see or hear.

The original paragraph identifies two categories of indecent material, and there is mention of profanity to provide a clue as to what the student thinks is indecent.

However, the paragraph could use some examples to make the idea of inappropriate material clearer. Farheya considered some of the television shows she had seen and made a few changes.

Revised paragraph:

Not owning a television set would also be a way to preserve innocence and keep my exposure to anything inappropriate at bay. While searching for a program to view, I have seen things I shouldn't have, no matter how fast I switched the channel. The synopsis of EuroTrip, which describes high school friends traveling across Europe, leads viewers to think that the film is an innocent adventure; however; it is filled with indecency, especially when the students reach Amsterdam. The movie Fast and Furious has the same problem since the women are all half-naked in half tops and mini-skirts or short-shorts. Television shows not only display physical indecency, but also verbal. Many television shows have no filters, and the characters say profane words freely. On Empire , one of the most viewed dramas today, the main characters Cookie and Lucious Lyon use profane words during their fights throughout entire episodes. Because The Big Bang Theory is a show about a group of science geeks and their cute neighbor, viewers might think that these science geniuses' conversations would be about their current research or other science topics. Instead, their characters regularly engage in conversations about their personal lives that should be kept private. The ease of flipping through channels and seeing or hearing such things makes television toxic for the mind, and without a television I wouldn't have to worry about what I may accidentally see or hear.

Farheya's addition of a few examples helps to convey why she thinks she would be better off without a television.

Consider the paragraph below on a literary topic, based on J. D. Salinger's short story "A Perfect Day for Bananafish" developed with specific examples from the text. Before Farheya could continue, she needed to first create a working thesis and determine the body paragraph topic:

Concluding Sentences

An effective concluding sentence draws together all the ideas raised in your paragraph. It reminds readers of the main point--the topic sentence--without restating it in exactly the same words. Using the sandwich example, the top bread (the topic sentence) and the bottom bread (the concluding sentence) are very similar. They frame the "meat" or body of the paragraph.

Compare the topic sentence and concluding sentence from the first example on hybrid cars:

Notice the use of the synonyms "advantages" and "benefits." The concluding sentence reiterates the idea that owning a hybrid is advantageous without using the exact same words. It also summarizes two examples of the advantages covered in the supporting sentences: low running costs and environmental benefits.

Writers should avoid introducing any new ideas into a concluding sentence because a conclusion is intended to provide the reader with a sense of completion. Introducing a subject that is not covered in the paragraph will confuse readers and weaken the writing.

A concluding sentence may do any of the following:

Example: Childhood obesity is a growing problem in the United States.

Example: A lack of healthy choices, poor parenting, and an addiction to video games are among the many factors contributing to childhood obesity.

Example: These statistics indicate that unless we take action, childhood obesity rates will continue to rise.

Example: Based on this research, more than 60 percent of children in the United States will be morbidly obese by the year 2030 unless we take evasive action.

Example: Childhood obesity is an entirely preventable tragedy.

Paragraph Length

Although paragraph length is discussed in the section on developing paragraphs with supporting sentences, some additional reminders about when to start a new paragraph may prove helpful to writers:

• If a paragraph is over a page long, consider providing a paragraph break for readers. Look for a logical place to divide the paragraph; then revise the opening sentence of the second paragraph to maintain coherence.
• A series of short paragraphs can be confusing and choppy. Examine the content of the paragraphs and combine ones with related ideas or develop each one further.
• When dialogue is used, begin a new paragraph each time the speaker changes. Begin a new paragraph to indicate a shift in subject, tone, or time and place.

Parts of a Paragraph

• Identify the topic sentence, supporting sentences, and concluding sentence in the following paragraph.
• Pair with another student and compare your answers.

The desert provides a harsh environment in which few mammals are able to adapt. Of these hardy creatures, the kangaroo rat is possibly the most fascinating. Able to live in some of the most arid parts of the southwest, the kangaroo rat neither sweats nor pants to keep cool. Its specialized kidneys enable it to survive on a miniscule amount of water. Unlike other desert creatures, the kangaroo rat does not store water in its body but instead is able to convert the dry seeds it eats into moisture. Its ability to adapt to such a hostile environment makes the kangaroo rat a truly amazing creature.

Improving Paragraph Coherence

A strong paragraph holds together well, flowing seamlessly from the topic sentence into the supporting sentences and on to the concluding sentence. To help organize a paragraph and ensure that ideas logically connect to one another, writers use a combination of elements:

• A clear organizational pattern: chronological (for narrative writing and describing processes), spatial (for descriptions of people or places), order of importance, general to specific (deductive), specific to general (inductive).
• Transitional words and phrases: These connecting words describe a relationship between ideas.
• Repetition of ideas: This element helps keep the parts of the paragraph together by maintaining focus on the main idea, so this element reinforces both paragraph coherence and unity.

In the following example, notice the use of transitions (in pink) and key words (in green):

Owning a hybrid car benefits both the owner and the environment. First, these cars get 20 percent to 35 percent more miles to the gallon than a fuel-efficient gas-powered vehicle. Second, they produce very few emissions during low speed city driving. Because they do not require gas, hybrid cars reduce dependency on fossil fuels, which helps lower prices at the pump. Alex bought a hybrid car two years ago and has been extremely impressed with its performance. "It's the cheapest car I've ever had," she said. "The running costs are far lower than previous gas-powered vehicles I've owned." Given the low running costs and environmental benefits of owning a hybrid car, it is likely that many more people will follow Alex's example in the near future.

Words such as "first" and "second" are transition words that show sequence or clarify order. They help organize the writer's ideas by showing that he or she has another point to make in support of the topic sentence. The transition word "because" is a transition word of consequence that continues a line of thought. It indicates that the writer will provide an explanation of a result. In this sentence, the writer explains why hybrid cars will reduce dependency on fossil fuels (because they do not require gas).

In addition to transition words, the writer repeats the word "hybrid" (and other references such as "these cars," and "they"), and ideas related to benefits to keep the paragraph focused on the topic and hold it together.

Summarizing Transitions

To include a summarizing transition for the concluding sentence, the writer could rewrite the final sentence as follows:

In conclusion, given the low running costs and environmental benefits of owning a hybrid car, it is likely that many more people will follow Alex's example in the near future.

Although the phrase "in conclusion" certainly reinforces the idea of summary and closure, it is not necessary in this case and seems redundant, as the sentence without the phrase already repeats and summarizes the benefits presented in the topic sentence and flows smoothly from the preceding quotation.

The second half of the sentence, in making a prediction about the future, signals a conclusion, also making the phrase "in conclusion" unnecessary.

The original version of the concluding sentence also illustrates how varying sentences openings can improve paragraph coherence. As writers continue to practice and develop their style, they more easily make these decisions between using standard transitional phrases and combining the repetition of key ideas with varied sentence openings.

The following table provides some useful transition words and phrases to connect sentences within paragraphs as well as to connect:

Table of Common Transitional Words and Phrases

Key takeaways.

• A paragraph contains three distinct components: a topic sentence, body, and concluding sentence.
• The topic sentence expresses the main idea of the paragraph.
• Good topic sentences are general enough to cover the supporting sentences and limited enough to be developed well.
• Topic sentences are clear and easy to follow, and provide an accurate indication of what will follow in the rest of the paragraph.
• Topic sentences may be explicit or implied. They are usually explicit in informative and persuasive essays, whereas they are often implied in narrative and descriptive writing.
• Topic sentences may be placed at the beginning, middle, or end of a paragraph. In most academic essays, the topic sentence is placed at the beginning of a paragraph.
• Supporting sentences help explain, prove, or enhance the topic sentence by offering facts, reasons, statistics, quotations, or examples.
• Concluding sentences summarize the key points in a paragraph and reiterate the main idea without repeating it word for word.
• Transitional words and phrases help organize ideas in a paragraph and show how these ideas relate to one another.
• Repetition of keywords helps keep paragraphs focused and coherent.