what is the main idea in a essay

Reading to Understand

• Reading to Understand (8 minutes)
• Working with Context Clues (5 minutes)
• The Main Idea

Steps for Identifying the Main Idea

• Knowledge Check
• Academic Reading Challenges (7 minutes)

The main idea is the point or message - what an author presents and what a reader takes from a text. 

Searching for that main idea is a very important activity in understanding a text. It is usually found in the opening paragraph when the author is  setting up the topic  and  expressing the thesis.  

However, the location can vary according to the type of reading. For example, a research article's main idea is toward the end, whereas a persuasive essay's main idea is conveyed at the beginning.

Pre-read to Determine the Overall Topic

Examine the title and then skim the text to determine who or what the reading is about. If you see the same word repeated you know that it is likely the topic or at least an important element of the topic. The topic should be a noun or a noun phrase such as "online education." The topic itself does not convey any meeting us you must read on to determine the main idea.

Ask yourself questions about the text as you read in-depth. Pay close attention to the introduction, the first sentence of body paragraphs, and the conclusion. In these places, the author typically states and supports the main idea. 

Questions to Ask Yourself While Reading : 

• What elements make up this topic?
• What is the author saying about this topic?
• What does the author want me to know or believe about this topic?

Reflect on what you have read. If the main idea is not immediately apparent to you review the introduction and conclusion. The  main idea should be a complete thought  such as "because of its flexibility, comfort, and lower-cost online education is increasing in popularity for younger generations."

Questions to Ask Yourself While Reflecting:

• What is the message I take away from this reading?
• What point does the information add up to?
• What idea does the author reinforce in the conclusion?
• What is the final impression I have about this topic?

Finding the Main Idea

Once you believe you have found the main idea, check that each body paragraph relates to that main idea. The body paragraph should include  supporting ideas  that reinforce and provide greater detail about the main idea. 

Some students find it beneficial to sketch the main idea and supporting ideas in their notes as a concept map.

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How to Find the Main Idea

ThoughtCo / Mary McLain 

• B.A., English, University of Michigan

Questions about the "main idea" of a passage are popular on reading comprehension tests, but sometimes, those questions are pretty difficult to answer, especially for students who are not completely sure they understand what the main idea really is.  Finding the main idea of a paragraph or longer passage of text is one of the most important reading skills to master, along with concepts like making an inference , finding the author's purpose , or understanding vocabulary words in context.

Here are a few techniques to help understand what, exactly, is a "main idea" and how to identify it accurately in a passage.

How to Define the Main Idea

The main idea of a paragraph is the primary point or concept that the author wants to communicate to the readers about the topic. Hence, in a paragraph, when the main idea is stated directly, it is expressed in what is called the topic sentence . It gives the overarching idea of what the paragraph is about and is supported by the details in subsequent sentences in the paragraph. In a multi-paragraph article, the main idea is expressed in the thesis statement, which is then supported by individual smaller points.

Think of the main idea as a brief but all-encompassing summary. It covers everything the paragraph talks about in a general way, but does not include the specifics. Those details will come in later sentences or paragraphs and add nuance and context; the main idea will need those details to support its argument.

For example, imagine a paper discussing the causes of World War I . One paragraph might be dedicated to the role that imperialism played in the conflict. The main idea of this paragraph might be something like: "Constant competition for massive empires led to increasing tensions in Europe that eventually erupted into World War I." The rest of the paragraph might explore what those specific tensions were, who was involved, and why the countries were seeking empires, but the main idea just introduces the overarching argument of the section.

When an author does not state the main idea directly, it should still be implied , and is called an implied main idea. This requires that the reader look closely at the content—at specific words, sentences, images that are used and repeated—to deduce what the author is communicating.

Finding the main idea is critical to understanding what you are reading. It helps the details make sense and have relevance, and provides a framework for remembering the content. Try these specific tips to pinpoint the main idea of a passage.

1) Identify the Topic

Read the passage through completely, then try to identify the topic. Who or what is the paragraph about? This part is just figuring out a topic like "cause of World War I" or "new hearing devices;" don't worry yet about deciding what argument the passage is making about this topic.

2) Summarize the Passage

After reading the passage thoroughly, summarize it in your own words in one sentence . Pretend you have just ten to twelve words to tell someone what the passage is about—what would you say?

3) Look at the First and Last Sentences of the Passage

Authors often put the main idea in or near either the first or last sentence of the paragraph or article, so isolate those sentences to see if they make sense as the overarching theme of the passage. Be careful: sometimes the author will use words like but , however ,  in contrast , nevertheless , etc. that indicate that the second sentence is actually the main idea. If you see one of these words that negate or qualify the first sentence, that is a clue that the second sentence is the main idea.

4) Look for Repetition of Ideas

If you read through a paragraph and you have no idea how to summarize it because there is so much information, start looking for repeated words, phrases, or related ideas. Read this example paragraph :

A new hearing device uses a magnet to hold the detachable sound-processing portion in place. Like other aids, it converts sound into vibrations, but it is unique in that it can transmit the vibrations directly to the magnet and then to the inner ear. This produces a clearer sound. The new device will not help all hearing-impaired people—only those with a hearing loss caused by infection or some other problem in the middle ear. It will probably help no more than 20 percent of all people with hearing problems. Those people who have persistent ear infections, however, should find relief and restored hearing with the new device.

What does this paragraph consistently talk about? A new hearing device. What is it trying to convey? A new hearing device is now available for some, but not all, hearing-impaired people. That's the main idea!

Avoid Main Idea Mistakes

Choosing a main idea from a set of answer choices is different than composing a main idea on your own. Writers of multiple choice tests are often tricky and will give you distractor questions that sound much like the real answer. By reading the passage thoroughly, using your skills, and identifying the main idea on your own, though, you can avoid making these 3 common mistakes : selecting an answer that is too narrow in scope; selecting an answer that is too broad; or selecting an answer that is complex but contrary to the main idea. 

Resources and Further Reading

• How to Find a Stated Main Idea
• How to Find an Implied Main Idea
• Finding the Main Idea Practice
• Finding Main Ideas In Paragraphs,  http://english.glendale.cc.ca.us/topic.html
• Finding the Main Idea , Columbia College

Updated by Amanda Prahl 

• Questions for Each Level of Bloom's Taxonomy
• How to Find the Implied Main Idea
• How to Find the Stated Main Idea
• Find the Main Idea Worksheets and Practice Questions
• Finding the Main Idea Worksheet 2
• How to Outline a Textbook Chapter
• Top 5 ACT Reading Strategies
• Paragraph Unity: Guidelines, Examples, and Exercises
• How To Write an Essay
• How to Find the Main Idea - Worksheet
• How to Teach Topic Sentences Using Models
• How to Boost Reading Comprehension With Reciprocal Teaching
• How to Write a Descriptive Paragraph
• An Introduction to Academic Writing
• What is The Author's Purpose?
• How to Make an Inference in 5 Easy Steps

Identifying the main idea of the story: A Guide for Students and Teachers

READING FOR MEANING: IDENTIFYING THE MAIN IDEA OF THE STORY

We have all been there, though it can often feel as futile as the search for that proverbial needle in a haystack…

Finding the main idea of a piece of writing can be challenging, but it is an essential reading comprehension skill for our students to develop. Students that become skilled in this art will benefit from it far beyond the perimeters of the school gates. From the small print of an insurance document to writing a book review, the ability to filter a text and identify its central idea is as much a crucial life skill as an essential literacy-based learning objective. Though it isn’t always easy, luckily, there is much we can do to help our students hone their abilities in this area.

WHAT IS ‘THE MAIN IDEA’? DEFINITION

Whether we are talking about the main idea of a paragraph, a poem, a chapter, or a longer text, finding the main idea requires the reader to identify the topic of a piece of writing and then uncover what the writer wants us to know about that topic.

As is so often the case, it is best to start small. When working with students on how to identify the main idea, begin by having students locate the main idea in a sentence before building up to locating it in a longer paragraph. As students gradually build their confidence in identifying the main idea in paragraphs, they will soon be ready to move on to longer texts in the form of chapters and eventually full-length books.

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A WORD ON PARAGRAPHS

The main idea of a sentence is usually fairly straightforward to identify. Often it is as simple as identifying the subject of the sentence. Whole chapters or books, on the other hand, can seldom be easily reduced to expression in the form of a single, main idea. For these reasons, the paragraph offers the student the most suitable format in which to practice their main idea identification skills.

Usually, if the writer knows what they are doing, we can identify a single main idea in every paragraph. We can think of this as the key point that is usually expressed as a topic sentence. It is often found in the paragraph’s first sentence, with subsequent sentences providing the supporting details. It can, however, occur in the middle, at the end, or even be split across the paragraph. It may not even be there at all – at least not explicitly.

Writers are a creative bunch, and so students will require more sophisticated means to accurately identify the main idea in all cases and that is exactly what this article will help you help your students to do.

HOW IS A MAIN IDEA EXPRESSED?

It can appear to be a reasonably clear-cut task to define the main idea, so why is it often so problematic for students to identify it? Well, the truth is that it needn’t be so. Often the central concept is expressed directly in the text and is as easy to identify as your own face in the mirror.

However, the main idea will not always be expressed so explicitly, and students must learn to identify it, whether it is expressed directly or merely implied, if they are to fully comprehend what they are reading.

  THE STATEMENT OF THE MAIN IDEA

Attention is the key to pulling the main idea from a text, whatever the genre. Students need to identify the most relevant information from the work and use it to develop a statement expressing what they perceive as the main idea.

We can refer to this as The Statement of the Main Idea . This statement should be a lean sentence or two. The process of composing this statement starts with asking questions about the text. Not all questions will apply to every text, but they will provide a good starting point for extracting the main idea from any piece of writing.

●     Who – Can the student identify the person or people the text is about?

●     What – Can the student identify the topic or underlying theme of the text?

●     When – Can the student identify a reference to a specific time or period?

●     Where – Can the student identify a specific place or a setting ?

●     Why – Can the student identify a reason or explanation for what happens in the text?

●     How – Can the student identify a method or theory in the text?

These questions, and variations of these questions, can help students draw out what the text is about. The two most important questions of those above are who and what . These will sufficiently elicit the information required to identify the main idea in most circumstances. But, the actual litmus test of whether the student can absorb the text’s central idea is whether or not they can summarize what they have read in their own words.

The Litmus Test: Summarizing and Paraphrasing

We know through our experience in the classroom that learning through teaching is a highly effective instructional strategy. It also offers teachers opportunities to observe and assess their students’ grasp of the concepts they have been working on. Similarly, when we ask our students to summarize or paraphrase the main idea of an extract, we are creating an opportunity to observe their comprehension of what they have read and their ability to identify the main idea therein.

You can also encourage students to regularly practice these skills by challenging them to paraphrase and summarize things you have said or read to them in class, even during lessons entirely unrelated to literacy. Encourage them to be concise and to the point; you may even wish to set a word limit of 10 or 15 words within which they must express the main idea. Keep it lean!

STRATEGIES FOR SUCCESS IN IDENTIFYING THE MAIN IDEA

Get The Gist

In this method, give each student a copy of a nonfiction paragraph. If you wish, you can differentiate for students’ different abilities by choosing extracts of varying complexities. Regardless of the level of difficulty, the approach will remain the same. Have students:

1. Ask themselves who or what the paragraph is about.

2. Ask themselves what is the most essential information about the who or what.

3. Restate the main idea in 10 words or less.

You can model this strategy for your students by first walking them through the process. Project the text onto the whiteboard for shared reading and, with focused support and prompting, have them answer the initial questions.

Part 3 of the process above can be undertaken as a piece of shared writing which will model the correct approach before students begin to do it independently. Later, when students have written independent statements of the main idea, they can compare their responses and offer each other feedback. After feedback sessions, they can be given a further opportunity to redraft and modify their statements for accuracy and brevity.

Through these processes, students will improve their ability to identify and express the main idea clearly and concisely.

Get the Gist – Longer Texts

As we mentioned earlier, it isn’t always easy to reduce a longer extract, such as a chapter, down to a single central idea – much less a whole book! There will be times, however, when students will be asked to do just that. They will need a systematic approach to help them in such circumstances. The following process provides for a practical approach:

1. Look at the title – Often, the title provides a good indication of the topic of the text or at least helps to orientate the reader in the direction of the main idea.

2. Look at the extract’s first and last sentences/paragraphs – Often, the main idea will be introduced and summarized respectively in these parts of the text.

3. Look for repeated words and phrases in the extract -The frequency with which they occur will be a strong indicator of their relative importance and will point students toward that elusive main idea.

4. Instruct students to ask themselves, “ What does the writer want me to know? ” – Answering this question successfully will require them to uncover the text’s main idea.

As the students work through the above steps, they can highlight, underline, or circle the keywords and phrases and then use these to help them form their main idea statement.

HOW TO LOCATE THE MAIN IDEA WHEN IT IS IMPLIED

Inferring the main idea requires students to look for patterns in the details as they read. When the main idea is explicit, the student must first identify the topic of the writing before determining what it is the writer wants the reader to know about it. If the main idea is not stated explicitly in a sentence or paragraph, then it is implied, and students must consciously work to uncover it by analysing the details to infer the main idea. Conscious practice of this strategy will soon see it become second nature, and the student will quickly become skilled in identifying the main idea even when it is not stated explicitly.

To efficiently identify the main idea in a piece of writing, students should first determine the text’s topic. Then, they will need to work out what it is the writer wants us to understand about that topic. This is the essence of how to identify the main idea.

Students should understand that the main idea may not always be explicit, and they may need to work hard to uncover precisely what the text implies. Regardless of whether the main idea is explicit or implicit, every paragraph will have the main idea. Students should understand that it can be located at the beginning, in the middle, at the end, or even be split up throughout the paragraph.

With perseverance and hard-earned experience, students can use various methods and, at times, a fusion of these methods to uncover the main idea with speed and accuracy. Soon they will be able to apply these methods to a broad range of texts over a wide range of lengths and complexities.

Teaching Resources

Use our resources and tools to improve your student’s writing skills through proven teaching strategies.

 MAIN IDEA GRAPHIC ORGANIZER (FREE DOWNLOAD)

 VIDEO TUTORIAL ON TEACHING THE MAIN IDEA

ARTICLES RELATED TO THE MAIN IDEA OF THE STORY

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Teaching Cause and Effect in Reading and Writing

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Understanding & Interacting with a Text

Finding the main idea in a piece of writing is a basic reading skill. No matter what type of expository text you read, the primary comprehension goal is to identify the main idea: the most important point that the writer wants to communicate.  Main ideas are often stated toward the start of a text, usually in an introductory paragraph. They are often repeated in fuller form toward the end of a text, usually in a concluding paragraph. Main ideas may be reinforced through headings, subheadings, and other forms of emphasis. However, main ideas may also be implied and not stated directly in the text.  Sometimes you need to infer the main idea based on the details, facts, and explanations in the text.

Some texts make the task of identifying the main idea relatively easy. Articles in scholarly journals often include an abstract, which is a condensed version of the information in the article, a version which focuses on main ideas. Textbooks, articles in general interest magazines, and online articles in blogs or on websites may include headings and subheadings which make it easier to identify core concepts. All types of texts may include graphic features such as sidebars, diagrams, and charts, which help readers understand complex information and distinguish between essential and inessential points. When reading a text with these features, use them to help identify the main idea.

For texts without graphic features, headings, or abstracts, and/or for texts with implied main ideas, use the following process to identify the main idea:

• Read the text.
• Ask yourself: What is the text about? – What is the topic?
• Ask yourself: What is the author saying about the topic?
• Identify repeated concepts and language; writers often use repetition to emphasize a main idea.
• Summarize the article after you read–put what you think the main idea is into your own words.  See if you can find any statements in the article that are similar to your summary.  If so, it’s likely that you’ve found the main idea.  If the main idea in the text is not stated but implied, then ask if your summary encapsulates the one thing you think the writer wants you to understand about the topic.

For a discussion of finding the main idea which includes examples, link to Finding the Main Idea from Monterey Peninsula College’s Writing Center.

The following two videos also provide very clear, useful discussions of finding the main idea in a text.

Read the article, “ Wikipedia Is Good for You!? ”  Then choose the statement that you think best offers the main idea.  In the answer, you’ll also find one reader’s discussion of her thought process finding the main idea.

• Wikipedia is a good source in certain cases.
• Wikipedia, although itself not always a valid source, is useful as a starting place for ideas, search terms, and other sources.
• Wikipedia, although itself not always a valid source, is useful both as a starting place and as a process guide to producing a text.

The third choice best offers the article’s main idea. I knew that the main idea would have something to do with the topic “Wikipedia,” because of the title.  But because the title included a question mark, I didn’t know if the main idea would end up being for or against Wikipedia.  Immediately after I skimmed, I thought that the main idea was stated directly in paragraph 12: “ There are productive ways to use Wikipedia. In fact, Wikipedia can be a good source in three different ways. Rather than a source to cite, it can be a source of (1) ideas, (2) links to other texts, and (3) search terms. ”  But when I read more fully, I realized that there were other things the author wanted me to understand, concepts more complex and nuanced than a direct “yes” or “no” answer to the title.  I found key ideas relating to the benefits of Wikipedia in paragraphs 2 and 4 in addition to 12. Paragraphs 2 and 4 discussed Wikipedia in terms of writing processes: the need to go back and revise, the co-production of an article’s text based on input from many sources (a “conversation”), and the concept of writing for a real audience. There are also a number of paragraphs that talk about the detriments of Wikipedia if used as a source.  Since there’s no single main idea sentence, I summarized the main concepts into a sentence that condensed and synthesized the article’s ideas into one main idea statement.

• Main Idea. Authored by : Susan Oaks, includes material adapted from Let's Get Writing; attribution below. Project : Introduction to College Reading & Writing. License : CC BY-NC-SA: Attribution-NonCommercial-ShareAlike
• Chapter 1 - Critical Reading. Authored by : Elizabeth Browning, Kirsten DeVries, Kathy Boylan, Jenifer Kurtz, and Katelyn Burton. Provided by : Virginia Western Community College. Located at : https://vwcceng111.pressbooks.com/chapter/chapter-1-critical-reading/ . Project : Let's Get Writing. License : CC BY-NC-SA: Attribution-NonCommercial-ShareAlike
• image of woman thinking, with question mark. Authored by : Tumisu. Provided by : Pixabay. Located at : https://pixabay.com/photos/question-doubt-problem-mark-3385451/ . License : CC0: No Rights Reserved
• video Location of the Main Idea Sentence. Authored by : Marc Franco. Provided by : Snap Language. Located at : https://www.youtube.com/watch?v=U0yZ8z7lt3Q . License : Other . License Terms : YouTube video
• video Implied Main Ideas and a Reading Strategy to Figure them Out. Authored by : Marc Franco. Provided by : Snap Language. Located at : https://www.youtube.com/watch?v=wydDRf3XEb8 . License : Other . License Terms : YouTube video

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Finding the Main Idea

The main idea of a paragraph is the author's message about the topic. It is often expressed directly or it can be implied. Knowing how to find main ideas allows you to understand and think critically about what you're reading. And that benefits you regardless of your chosen profession.

Where Are The Main Ideas Found?

It is easy to identify a main idea that is directly expressed in the text. Main ideas are often found:

• at the beginning of paragraphs. The first sentence often explains the subject being discussed in the passage.
• in the concluding sentences of a paragraph. The main idea can be expressed as a summation of the information in the paragraph as well as a link to the information in the next paragraph.

The main idea is not always clearly stated.   It is more difficult to identify a main idea when it is inferred or implied. It can be implied through other words in the paragraph. An implied main idea can be found in several ways.

• Several sentences in a paragraph can imply the main idea by introducing facts about the topic before actually stating the topic.
• Implied ideas can be drawn from facts, reasons, or examples that give hints or suggestions concerning the main idea. These hints will be clues leading you to discover the main idea in the selected text.
• Try the passage below to see if you can pick out the main idea. "To many parents, the infant's crying may be mainly an irritation, especially if it continues for long periods. But crying serves important functions for the child as well as for the parents. For the child, crying helps improve lung capacity and the respiratory system. Perhaps more important, the cry serves as a signal of distress. When babies cry, they indicate that they are hungry or in pain, and this is important information for parents."

Use the hints below to determine the correct main idea of this paragraph.

After reading a paragraph ask, "What point is the author making in this passage?"

Ask the following questions:

• Who - Does this passage discuss a person or group of people?
• When - Does the information contain a reference to time?
• Where - Does the text name a place?
• Why - Do you find a reason or explanation for something that happened?
• How - Does this information indicate a method or a theory?

How To Determine If I Have Selected the Correct Main Idea of a Paragraph?

If you are able to summarize the information in the passage in your own words,you have absorbed the correct main idea. To accomplish this goal, try the steps listed below after reading a short section of your textbook.

• Write a short summary in your own words about what you have read.
• Does your summary agree with this general topic?
• Does your summary contain the same ideas being expressed by the author?
• Could you write a headline (or textbook subheading) that would express your summary in less than five words?

If you are able to rephrase your choice of a topic sentence into a question and then determine if the passage answers your question, you have been successful at selecting a main idea.

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How to find the main idea

Determining the main idea of any text can be tricky. Let’s take a look at some helpful ways to zero in on it.

Author Taylor Hartley

Published January 19, 2024

Published Jan 19, 2024

• Key takeaways
• Think of the main idea as the point – The main idea is the primary argument or claim discussed by the author, around which all other supporting details and explanations revolve.
• Make sure you read the full text – You can determine the main idea by reading the full text, annotating its key points, summarising, and looking for any repeating ideas or statements.
• There are a few key questions to ask – While reading, it’s always important to look for the Who, What, Where and Why. These details will help explain why the author believes what they do.

Table of contents

What exactly is the main idea?

How to find the main idea in five easy steps.

• Questions to ask when trying to find the main idea​
• Watch out for distractors​

The main idea of a text can be a difficult thing to nail down, but it’s the most important detail of any passage you come across. As you travel along your journey towards mastering reading comprehension, you’ll need to build a habit of figuring out what the main idea is. Once you’ve accomplished that, you’ll have a better chance at consistently understanding even the most complicated of paragraphs. 

The main idea is the central argument or point a paragraph is trying to communicate. It’s often the first claim an author makes when they begin their work but it can also be formed based on key details and facts dispersed throughout the body of a paragraph, too. Think of the main idea as the anchor of a paragraph, holding the passage steady and providing a foundation for other important points. 

Is there a difference between the central idea and the main idea?

You might be a bit confused if you discover people referencing a “central idea,” of a paragraph or essay. But fear not! The central idea and the main idea are one and the same. The central idea represents the same key talking points and details as the main idea–the primary argument an author is trying to make. 

Is there a difference between a supporting detail and a main idea?

Even though the central idea and the main idea are the same, there are a few differences between the main idea and it various supporting details. Supporting details are another important part of reading comprehension, as they provide some much needed context, or explanation of the overall main idea. 

A supporting detail might go into greater detail on a specific topic, and give you a bit more understanding of the main point the author is trying to drive home. However, these supporting details don’t exist as their own main ideas, they’re simply there to support the main idea and reinforce it.

Now that you have a basic understanding of what the main idea is, you’ll need to start learning ways to identify it when you encounter it in the wild. Follow along as we walk through some helpful tips on pinpointing the main idea of a passage.  

1. Identify the topic.

One of the first tools you can use for locating the main idea is referencing the title of a paper or any subtitles used throughout. Titles are a great way of gaining a grasp on the central topic of an author’s argument. Take the title of this article, “How to find the main idea.” We can learn a lot about what a piece of writing is about by looking at its title. 

2. Read the entire passage.

The second step in finding the main idea? You guessed it, thoroughly read the passage so you can get a firm handle on what it’s trying to say. You might be tempted to skim the writing to save time, but it’s important to read each sentence with intent so no details go unseen. Remember, even the smallest detail can provide you with the extra confidence and understanding you need to define the main idea. 

3. Annotate as you go, underlining key points or ideas you see.

One helpful tip to help guide your understanding of the main idea is to annotate, or take notes, while you read the text. Doing this will give you a brief but helpful outline of the main points the passage makes. You can look back through your notes once you’re done reading and use them to solve the main idea puzzle. Remember to write down any details you find particularly impactful.  

4. At the end, summarise the passage and what you think it’s arguing.

When you’re finished reading and annotating, use what you’ve learned from the text to form a summary of the entire passage. Your summary should include the main arguments and supporting evidence the author used to get their point across. By creating a summary, you’ve reinforced the main ideas of the text in your head, making it easier to discover what the author is really trying to say. 

5. Read the first sentence and last sentence and look for repeating ideas in your annotations.

The main idea is often expressed in the first few lines of a text and reiterated in the closing lines of a passage. Knowing this, take a good look at both the first and last lines of a paragraph, and see if there are any recurring details or statements within each one. If there are similarities, there’s a good chance that these statements reflect what the main idea is. 

Questions to ask when trying to find the main idea

Although it’s important to take note of each detail you come across in a passage, some can be more valuable when trying to determine the main idea. These details are key parts of the summary you’ll need to create. They’re known as the Who, the What, the Where, and the Why. 

The Who relates to the subject of the text; the person or thing the passage is describing. It’s most often a person or group of people, but it can also range from animals to robots to insects! Identifying the Who is an important part of grasping the main idea, because you’ll need to determine just who the author is writing about if you’re going to figure out what the author is trying to say about them.

What is happening within the passage? What actions are taken by the Who? These actions, or reactions, are known as the What. This is the meat of the paragraph, the behaviours or movements of characters and people that the author uses to describe what’s happening in their writing.

The When is another important detail you’ll need to define as you discover the main idea. The When of a passage is the time period the paragraph itself takes place in or references. Think of the When as a date on a calendar. The Who and What you’ve already defined, but on what date – or at what time of the day – do they appear?

What is the setting or location of the paragraph? Where does the action take place? Is it in a specific state or country, or maybe a specific city or neighbourhood? By defining the Where, you’ll be able to determine how the setting influences the main idea. Maybe there are specific laws or rules tied to the setting that affect the main idea, or maybe the geography of the setting affects what the author is trying to say about the region and the people who live in it. No matter what the Where is, you need to define it so that you can understand how the setting of a passage relates to the main idea. 

And most importantly, why?

The Why is perhaps the most important piece of the main idea puzzle. To define the Why, ask yourself how the author explains the reasoning behind their argument. Why do certain things work the way they do? Why do people act in the ways that they do? The answer to these questions are within the text, and they’re probably the most important facts regarding the main idea. If you can define the Why, or the explanation for why the author thinks the way they do, you can find the main idea. 

Watch out for distractors

As you work your way through a multiple-choice test, reading comprehension questions will normally ask you to pick the main idea out from a collection of possible answers. The creators of these tests can be tricky, and might try to mislead you with answers that don’t actually align with the true main idea.

Because of this, it’s important that you read the passage carefully, paying close attention to the little details throughout that might clue you in to the main idea’s meaning. Make sure to come up with your own main idea, and don’t rely on the answers provided to you by the test. Wrong answers are often either too narrow in their description of the text, too broad, or make claims that are contrary to the argument posed by the author.

Creating your own outline of the passage once you’ve carefully read it will help you summarise the text, pick out its key arguments, and determine the best answer for what the main idea is.

Explore the main idea with DoodleEnglish

DoodleEnglish  is an app that’s filled with thousands of fun, interactive exercises covering grammar, punctuation, spelling and more!

Designed by teachers, it creates each child a unique work programme tailored to their needs, boosting their confidence and skills in English.  Try it for free  today!

FAQs about the main idea

The main idea should include the main talking points of a paragraph. Think of it as a summary of the author’s writing that represents their central argument. The main idea includes the key statements, facts, or opinions the author chooses to include that embody what they’re trying to say. 

There are several strategies you can use to help you find the main idea. Techniques such as looking at the title of the work, or any subtitles, writing down your own summary of the text, looking at the first and last sentences of a paragraph, and identifying recurring ideas are ways to discover the main idea. You can also take notes throughout your reading so that you have a brief outline of key details. 

Yes, it’s extremely important for you to read the passage in its entirety if you want the best chance at understanding its main idea. You may feel tempted to skim or speed-read your way through an essay, but be wary that you might miss certain details or key ideas that could have helped you define the central argument. The best way to go about defining the main idea is to read each sentence intently. 

The central claim and the main idea are synonymous with one another, meaning they represent the same thing. If you’ve identified the central claim of a passage, you’ll be happy to know that you’ve also found the main idea!

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Identifying Main Ideas

A main idea is the most important thought on your topic. So let’s get into how to spot, and create, a really good one!

Explicit Main Idea

A main idea is the author’s controlling point about the topic.  It usually includes the topic and the author’s attitude or opinion about the topic.  To identify the main idea, ask yourself:

• Who or what is the paragraph about?  The answer is the topic .  The topic can be stated in just a few words.
• What does the author think about the topic?  The answer is the  point. The point can also be stated in just a few words.

Once you’ve identified these pieces, you can combine them to state the author’s main idea in a single sentence.

Topic + Point = Main Idea

Topic = the cool-down period

Point  = important parts of exercise workouts

( Topic + Point = Main Idea )

The cool-down period is an important part of an exercise workout .

Placement of Main Ideas & Topic Sentences

Often, but not always, the main idea of a paragraph is written as that paragraph’s topic sentence .  A topic sentence is a single sentence that states the topic and words that qualify the topic by revealing the author’s opinion about the topic or the author’s approach to the topic and also reveal the author’s thought pattern or organizational strategy. When you’ve identified both the main idea and the thought pattern, you can identify the topic sentence.

Main Idea = The cool-down period is an important part of an exercise workout

Thought Pattern  = several reasons

The cool-down period is an important part of an exercise workout for several reasons .

Main Idea +  Thought Pattern = Topic Sentence

Below are more examples of how to craft topic sentences.

General to Specific

The topic sentence is the one sentence that is general enough to include all the ideas in the paragraph.  Therefore, a topic sentence that begins a paragraph or appears within the first few sentences of a paragraph signals a move from general ideas to specific ideas.  

Specific to General to Specific

At times, an author begins a paragraph with details to stir the reader’s interest in the topic.  The flow of ideas moves from the specific to the general and back to the specific.

Specific to General

Sometimes, an author waits until the end of the paragraph to state the topic sentence and main idea.  This allows the details to build up to the main idea and is sometimes called “climactic order.”

Implicit Main Idea

Implicit main idea refers to a main idea that is not stated directly but is strongly suggested by the supporting details in the passage.  Many paragraphs in college textbooks do not provide a topic sentence, instead using supporting details to imply the main idea.  To determine the implied main idea, look at:

• The supporting details: facts, examples, descriptions, and explanations given
• The author’s thought pattern
• The author’s purpose

Read the sample paragraph below:

Egypt’s pyramids are the oldest existing buildings in the world.  These ancient tombs are also among the world’s largest structures.  The largest pyramid stands taller than a 40-story building and covers an area greater than that of ten football fields.  More than 80 pyramids still exist, and their once-smooth limestone surfaces hide secret passageways and rooms.  The pyramids of ancient Egypt served a vital purpose: to protect the pharaoh’s bodies after death.  Each pyramid held not only the pharaoh’s preserved body, but also all the goods he would need in his life after death.

1.The topic of the paragraph is pyramids

2. There are three groups of supporting details: age, size, and purpose

3.The author has organized the supporting details into “characteristics” or “traits” of the pyramids.

4.The author purpose seems to be trying to define a pyramid.

Implied Main Idea: Pyramids are structures with several distinctive traits.

Remember, the main idea must be broad enough to cover all the details in the paragraph without being so broad that it includes details not mentioned.  

Michael|2019

This work is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/4.0/.

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3.8: Main Ideas and Supporting Details

• Last updated
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• Page ID 31307

• Athena Kashyap & Erika Dyquisto
• City College of San Francisco via ASCCC Open Educational Resources Initiative

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Analyze Thesis or Main Ideas of Texts

Being able to identify the purpose and thesis of a text, while you’re reading it, takes practice. Questioning the text you’re reading is a good place to start. When trying to isolate the thesis, or main idea, of your reading material, consider these questions:

• What is the primary subject of this text?
• Is the author trying to inform me, or persuade me?
• What does the author think I need to know about this subject?
• Why does the author think I need to know about this subject?

Sometimes the answer to these questions will be very clearly stated in the text itself. Sometimes it is less obvious, and in those cases, the techniques on the following page will be useful.

Implicit vs. Explicit Main Idea/ Thesis Statements

According to author Pavel Zemliansky,

Arguments then, can be explicit and implicit, or implied. Explicit arguments contain noticeable and definable thesis statements and lots of specific proofs. Implicit arguments, on the other hand, work by weaving together facts and narratives, logic and emotion, personal experiences and statistics. Unlike explicit arguments, implicit ones do not have a one-sentence thesis statement. Instead, authors of implicit arguments use evidence of many different kinds in effective and creative ways to build and convey their point of view to their audience. Research is essential for creative effective arguments of both kinds.

Even if what you’re reading is an informative text, rather than an argumentative one, it might still rely on an implicit thesis statement. It might ask you to piece together the overall purpose of the text based on a series of content along the way.

The following video defines the key terms explicit and implicit, as they relate to thesis statements and other ideas present in what you read. It also introduces the excellent idea of the reading voice and the thinking voice that strong readers use as they work through a text.

To help keep you on your toes, the author of this video challenges you to find her spelling mistake in one of her cards along the way!

Explicit v. implicit . Authored by: Michele Armentrout. All Rights Reserved. License Terms: Standard YouTube license.

Take the quiz about implicit and explicit thesis statements to see how well you have understood the information.

Thesis and Topic Sentences

You’ll remember that the first step of the reading process, previewing, allows you to get a big-picture view of the document you’re reading. This way, you can begin to understand the structure of the overall text. A later step in the reading process, summarizing , allows you to encapsulate what a paragraph, section, or the whole document is about. When summarizing individual paragraphs, it’s likely that your summary ends up looking like a paraphrase of that paragraph’s topic sentence .

A paragraph is composed of multiple sentences focused on a single, clearly-defined topic. There should be exactly one main idea per paragraph, so whenever an author moves on to a new idea, he or she will start a new paragraph. For example, this paragraph defines what a paragraph is, and now we will start a new paragraph to deal with a new idea: how a paragraph is structured.

Paragraphs are actually organized much like persuasive papers are. Just like a paper has a thesis statement followed by a body of supportive evidence, paragraphs have a topic sentence followed by several sentences of support or explanation. If you look at this paragraph, for example, you will see that it starts with a clear topic sentence letting you know that paragraphs follow a structure similar to that of papers. The next sentence explains how a paragraph is like a paper, and then two more sentences show how this paragraph follows that structure. All of these sentences are clearly connected to the main idea.

The topic sentence of a paragraph serves two purposes: first, it lets readers know what the paragraph is going to be about; second, it highlights the connection between the present paragraph and the one that came before. The topic sentence of this paragraph explains to a reader what a topic sentence does, fulfilling the first function. It also tells you that this paragraph is going to talk about one particular aspect of the previous paragraph’s main idea: we are now moving from the general structure of the paragraph to the particular role of the topic sentence.

After the topic sentence introduces the main idea, the remainder of the sentences in a paragraph should support or explain this topic. These additional sentences might detail the author’s position on the topic. They might also provide examples, statistics, or other evidence to support that position. At the end of the paragraph, the author may include some sort of conclusion or a transition that sets up the next idea he or she will be discussing (for example, you can see this clearly in the last sentence of the third paragraph).

The Three Parts of a Paragraph

The topic is the subject of the paragraph. It can be:

• A few words long
• These words (or words related to the topic) are typically repeated throughout the paragraph
• Answers the question: What is this paragraph about?

2) Main Idea

This is the writer’s overall point. It can be:

• If stated in the paragraph, it’s called a “topic sentence”
• If unstated in the paragraph, the reader must figure it out (infer it) from details
• General enough to cover the more specific supporting details
• Usually (but not always!) near the beginning of the paragraph
• Answers the question: What is the overall point being made about the topic?”

3) Supporting Details

These are the details in the paragraph that support the main idea. They can be either major or minor supporting details.

Tips for Identifying Main Ideas

Although you are learning to put the main idea first in your own paragraphs, professional writers often don’t. Sometimes the first sentence of a paragraph provides background information, poses a question, or serves as a bridge from a previous paragraph. Don’t assume it is the main idea. Use these tips instead:

• Look for a general statement that appears to “cover” the other information.
• Figure out the general topic of the paragraph first. Then ask yourself, “What point is the writer trying to make about this topic?”
• Look for clue words. Main ideas sometimes have words such as “some” or plural nouns like “ways” or “differences” that signal a list of details to come.
• Is this statement supported by most of the other information?
• If I turn this statement into a question, does the other information answer it?

SPECIAL NOTE: Sometimes a main idea covers more than one paragraph. This may happen in newspaper articles or when the writer has a lot to say about one topic.

Difference Between the Topic and Main Idea

To understand the difference between a main idea and the topic, imagine that you are listening to your friends talk about their pets. The TV is on, so all you can make out are the name of their pets. If someone asked you what the topic was, you would say “pets.” But because you couldn’t hear the whole thing, you didn’t understand the “main idea” was whose pet was the best. The topic is very broad – the main idea is more specific. The sentences that follow in the paragraph exercise offer examples or descriptions to illustrate or explain the main idea. Note the reading-writing connection--while we are finding the main idea as readers, we will be using the main ideas to write topic sentences in paragraphs.

Exercise \(\PageIndex{1}\)

Read the following paragraph and then decide what the main idea is.

One myth about exercise is that if a woman lifts weights, she will develop muscles as large as a man’s. Without male hormones, however, a woman cannot increase her muscle bulk as much as a man’s. Another misconception about exercise is that it increases the appetite. Actually, regular exercise stabilizes the blood-sugar level and prevents hunger pangs. Some people also think that a few minutes of exercise a day or one session a week is enough, but at least three solid workouts a week are needed for muscular and cardiovascular fitness.

Choose the Main Idea:

a) Women who lift weights cannot become as muscular as men.

b) There are several myths about exercise.

c) Exercise is beneficial to everyone.

d) People use many different excuses to avoid exercising.

Explain why you did or did not choose each possible answer above.

a) ________________________________________________________________________

________________________________________________________________________

b) ________________________________________________________________________

c) ________________________________________________________________________

d) ________________________________________________________________________

Exercise \(\PageIndex{2}\)

“To Sherlock Holmes she is always THE woman. I have seldom heard him mention her under any other name. In his eyes she eclipses and predominates the whole of her sex. It was not that he felt any emotion akin to love for Irene Adler. All emotions, and that one particularly, were abhorrent to his cold, precise but admirably balanced mind. He was, I take it, the most perfect reasoning and observing machine that the world has seen, but as a lover he would have placed himself in a false position. He never spoke of the softer passions, save with a gibe and a sneer. They were admirable things for the observer--excellent for drawing the veil from men's motives and actions. But for the trained reasoner to admit such intrusions into his own delicate and finely adjusted temperament was to introduce a distracting factor which might throw a doubt upon all his mental results.“

The main idea of this paragraph is the first sentence. The first sentence identifies the two characters that the rest of the paragraph is going to describe, and suggests at their relationship. Each sentence that follows either describes the woman, Sherlock Holmes, or how he felt about her or her effect on him.

Exercise \(\PageIndex{3}\)

Here is another example from the same story, see if you can find the main idea:

One night--it was on the twentieth of March, 1888--I was returning from a journey to a patient (for I had now returned to civil practice), when my way led me through Baker Street. As I passed the well-remembered door, which must always be associated in my mind with my wooing, and with the dark incidents of the Study in Scarlet, I was seized with a keen desire to see Holmes again, and to know how he was employing his extraordinary powers. His rooms were brilliantly lit, and, even as I looked up, I saw his tall, spare figure pass twice in a dark silhouette against the blind. He was pacing the room swiftly, eagerly, with his head sunk upon his chest and his hands clasped behind him. To me, who knew his every mood and habit, his attitude and manner told their own story. He was at work again.

a. One night--it was on the twentieth of March, 1888--I was returning from a journey to a patient (for I had now returned to civil practice), when my way led me through Baker Street.

b. As I passed the well-remembered door, which must always be associated in my mind with my wooing, and with the dark incidents of the Study in Scarlet, I was seized with a keen desire to see Holmes again, and to know how he was employing his extraordinary powers

c. His rooms were brilliantly lit, and, even as I looked up, I saw his tall, spare figure pass twice in a dark silhouette against the blind.

d. He was pacing the room swiftly, eagerly, with his head sunk upon his chest and his hands clasped behind him.

The correct answer is a. The first sentence gives you the point-of-view, or who is the person explaining what is happening, and it lets you know that this person is going into a particular place. Each of the other sentences describes the place where he, Dr. Watson, entered, what it looked like, and who was in there.

B is not as strong a choice as a, because it refers to Study in Scarlet and Holmes’ powers, which are not described in the rest of the paragraph. Choice B is too specific to be the main idea of this paragraph. Choices c and d are not correct because they are describing Holmes’ actions, and his walking is not what the whole paragraph is about.

Exercise \(\PageIndex{4}\)

Let’s try one more. Read the following and select which one is the main idea from the list below:

“At three o'clock precisely I was at Baker Street, but Holmes had not yet returned. The landlady informed me that he had left the house shortly after eight o'clock in the morning. I sat down beside the fire, however, with the intention of awaiting him, however long he might be. I was already deeply interested in his inquiry, for, though it was surrounded by none of the grim and strange features which were associated with the two crimes which I have already recorded, still, the nature of the case and the exalted station of his client gave it a character of its own. Indeed, apart from the nature of the investigation which my friend had on hand, there was something in his masterly grasp of a situation, and his keen, incisive reasoning, which made it a pleasure to me to study his system of work, and to follow the quick, subtle methods by which he disentangled the most inextricable mysteries. So accustomed was I to his invariable success that the very possibility of his failing had ceased to enter into my head.”

a. At three o'clock precisely I was at Baker Street, but Holmes had not yet returned.

b. The landlady informed me that he had left the house shortly after eight o'clock in the morning.

c. I sat down beside the fire, however, with the intention of awaiting him, however long he might be

d. I was already deeply interested in his inquiry, for, though it was surrounded by none of the grim and strange features which were associated with the two crimes which I have already recorded, still, the nature of the case and the exalted station of his client gave it a character of its own.

The way to figure out that the answer, this time, is d, is to look at each sentence that follows and ask, does this refer back to the location, Baker Street? Do they refer back to the landlady? Do they refer back to Dr. Watson’s waiting? Or, do they refer back to the case? They both refer back to the current investigation, by talking about Holmes’ way of untangling mysteries, and that Watson’s belief that the investigation would be a success.

The introduction to this paragraph may have thrown you off so be careful to read through the entire paragraph each time, and look at each sentence and its role within the paragraph. Mostly the main idea comes right up front – but not always!

Reading-Writing Connection: Thesis Statements

Exercise \(\PageIndex{5}\)

I. Develop a paragraph. Your paragraph must include the following:

• Between 7-9 sentences
• A main idea sentence
• Each sentence must be developed, and checked for correct spelling and grammar
• Have at least three of the four different types of sentences (simple, complex, compound, compound-complex)
• Attach your pre-writing practice after the paragraph, to identify which sentences are major and minor detail sentence

Supporting Details

Earlier we covered what a main idea sentence was: a sentence that names the topic, and allows the reader to understand the focus of the paragraph to follow. It is logical then that the rest of the sentences in the paragraph support the main idea sentence. Support means that they either explain something about the topic, or they offer an example.

We’ve examined the relationship between a text’s thesis statement and its overall organization through the idea of topic sentences in body paragraphs. But of course body paragraphs have a lot more “stuff” in them than just topic sentences. This section will examine in more detail what that “stuff” is made of.

First, watch this video that details the relationship between a topic sentence and supporting details, using the metaphor of a house. The video establishes the difference between major and minor details, which will be useful to apply in coming discussions. (The video has instrumental guitar for audio, but no spoken words, so it can be watched without sound if desired.)

Video: Supporting Details . Authored by: Mastering the Fundamentals of College Reading and Writing. All Rights Reserved. License Terms: Standard YouTube license.

The following image shows the visual relationship between the overall thesis, topic sentences, and supporting ideas:

This next image shows where a topic sentence might reside in the paragraph, in relation to the rest of the supporting details:

In #5 of the sequence above, the topic sentence is rephrased between the opening and closing of the paragraph, to reinforce the concept more strongly.

Point, Illustration, Explanation (P.I.E.)

Many authors use the PIE format to structure their essays. PIE = point, illustration, explanation to structure their body paragraph and support their thesis. The point furthers a thesis or claim and is the same as the main idea, the illustration provides support for the point, and the explanation tells the audience why the evidence provided furthers the point and/or the thesis.

For example, in his argument against the +/- grading system at Radford, student-writer Tareq Hajj makes the Point that “Without the A+, students with high grades in the class would be less motivated to work even harder in order to increase their grades.”

He Illustrates with a quote from a professor who argues, “‘(students) have less incentive to try’” (Fesheraki, 2013).

Hajj then Explains that “not providing [the most motivated students] with additional motivation of a higher grade … is inequitable.”

Through his explanation, Hajj links back to his claim that “A plus-minus grading scale … should not be used at Radford University” because, as he explains, it is “inequitable.” The PIE structure of his paragraph has served to support his thesis.

All Claims Need Evidence

Ever heard the phrase “everyone is entitled to his opinion”? It is indeed true that people are free to believe whatever they wish. However, the mere fact that a person believes something is not an argument in support of a position. If a text’s goal is to communicate effectively, it must provide valid explanations and sufficient and relevant evidence to convince its audience to accept that position. In other words, “every author is entitled to his opinion, but no author is entitled to have his opinion go unchallenged.”

What are the types of evidence?

Any text should provide illustrations for each of its points, but it is especially important to provide reliable evidence in an academic argument. This evidence can be based on primary source material or data (the author’s own experience and/or interviews, surveys, polls, experiments, that she may have created and administered). Evidence can also stem from secondary source material or data (books, journals, newspapers, magazines, websites or surveys, experiments, statistics, polls, and other data collected by others).

Let’s say, for example, that you are reading an argument that college instructors should let students use cell phones in class. Primary source material might include a survey the author administered that asks students if policies forbidding cell phone usage actually stop them from using their phones in class. Secondary sources might include articles about the issue from Faculty Focus or The Chronicle of Higher Education .

Logos, Ethos, Pathos

Writers are generally most successful with their audiences when they can skillfully and appropriately balance the three core types of appeals. These appeals are referred to by their Greek names: logos (the appeal to logic), pathos (the appeal to emotion), and ethos (the appeal to authority). All of these are used in one way or another in your body paragraphs, particularly as it relates to the support or information in the paragraph.

Logical Appeals

Authors using logic to support their claims will include a combination of different types of evidence. These include the following:

• established facts
• case studies
• experiments
• analogies and logical reasoning
• citation of recognized experts on the issue

Authoritative Appeals

Authors using authority to support their claims can also draw from a variety of techniques. These include the following:

• personal anecdotes
• illustration of deep knowledge on the issue
• testimony of those involved first-hand on the issue

Emotional Appeals

Authors using emotion to support their claims again have a deep well of options to do so. These include the following:

• impact studies

As you can see, there is some overlap on these lists. One technique might work simultaneously on multiple levels.

Most texts rely on one of the three as the primary method of support, but may also draw upon one or two others at the same time.

Check your understanding of supporting details by doing this quiz.

Exercise \(\PageIndex{6}\)

Read the paragraph below and find the main idea and supporting details.

My parents were very strict when I was growing up. My mother in particular was always correcting my behavior. One day when I forgot to look both ways when I was crossing the street, my mother made me go back home; she said that I could not go out at all if I could not be safe. My father was more concerned with my grades. Every night he would make me go to my room before I could watch television.

Let’s examine the pattern for this paragraph. The first sentence (1) presents the main idea, that my parents were strict. The second sentence (2) explains what I mean by “strict,” by saying that my mother was strict in correcting my behavior. The third sentence (3) offers an example of how she would correct my behavior. The fourth sentence (4) explains further, that my father was strict when it came to schoolwork, and then the fifth sentence (5) offers an example of how he was strict.

If we were going to diagram the paragraph above, it would look like this:

EXPLAIN (2)-___________________EXPLAIN (4)

EXAMPLE (3) EXAMPLE (5)

Major and Minor Supporting Details

One way to talk about whether a sentence directly supports the main idea (the second level), or indirectly supports the main idea (the third level) is to call them MAJOR detail sentences or MINOR detail sentences. Major details directly explain something about the topic, while minor details offer examples for the Major detail that came right before.

Exercise \(\PageIndex{7}\)

Read the paragraphs, and then identify each sentence as either a main idea, a major detail, or a minor detail sentence.

Single parents have to overcome many obstacles to return to school. If the child is very young, finding quality babysitting can be difficult. Many babysitters are unreliable and that can mean that the parent has to miss many classes, which can hurt their grades. It is also hard to find enough time to study. Children require a lot of attention and are also noisy, and that can interfere with a parent's ability to complete their homework. Finally, raising children is expensive. Many single parents discover that they can’t meet the costs of both raising children and paying for tuition, books, and fees.

Sentence #1: Sentence #2: Sentence #3: Sentence #4: Sentence #5: Sentence #6: Sentence #7:

My grandmother turned 70 last year and celebrated by going skydiving. She said she always wanted to try and figured it was now or never. Many people think that when you get older you can no longer do fun things, but this is not true. The senior center in town offers dance lessons and also takes groups to the art museum. The classes are always full because so many people want to try new things. Towns are even developing senior living communities around activities such as golf and tennis. Those communities are very popular because people like to live with others who share their interests.

Sentence #1: Sentence #2: Sentence #3: Sentence #4: Sentence #5: Sentence #6: Sentence #7

Exercise \(\PageIndex{8}\)

Below you will find several main idea sentences. Provide appropriate supporting sentences following the pattern of Major-Minor-Major- Minor.

1. It is not a good idea to watch a lot of television. Major: Minor: Major: Minor:

2. Coaches have good reasons to be firm with the players on their team. Major: Minor: Major: Minor:

3. Many people believe it is a bad idea to spank children. Major: Minor: Major: Minor:

4. There are several steps I can take to be successful in college.

Major: Minor: Major: Minor:

Reading-Writing Connection: Supporting Details

Exercise \(\PageIndex{9}\)

Return to the Thesis exercise you did previously. As part of that exercise, you identified two topic sentences from your selected reading. Now, look more closely at the paragraphs where those two topic sentences came from.

• Write a paragraph that identifies the type of support that each paragraph from the reading uses to reinforce each of those two topic sentences. Are they narrative or personal examples? Are they facts or statistics? Are they quotes or paraphrases from research materials?
• Write another paragraph that compares the effectiveness of the supporting claims of one of the selected paragraphs against the other one. Which seems more successful in its goal? Why do you feel that way?

Contributors

• Adapted from English 9Y Pre-College English . Provided by: Open Course Library. CC BY 3.0
• Adapted from Thesis Statements and Topic Sentences . Provided by: Lumen Learning. CC-BY-NC-SA
• Adapted from Methods of Discovery: A Guide to Research Writing . Authored by: Pavel Zemliansky. Provided by: Libretexts. CC BY: Attribution

This page last updated June 6, 2020.

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Thesis Statements vs. Main Ideas

Related articles, how to write a unified essay, what is a circular narrative style, what narrative point of view is used in "and then there were none".

• Teacher Tips: How to Write Thesis Statements for High School Papers
• Explanation on Theme in Literature for Students

The thesis statement is a one-sentence statement that expresses the main idea of the essay. The thesis statement is an arguable statement that communicates the author’s stance on a topic to the reader. In order to better understand the differences between a thesis statement and main idea, it's important to understand the components of an essay. Essentially, it's not a “versus” situation because the thesis statement and main idea cannot exist without the other.

Purpose of the Thesis Statement

The thesis statement is the foundation of the essay because it tells the reader what the essay will be about and gives the essay direction. The goals of the thesis statement are to organize and development your argument and provide your reader with a road map or guide to your argument. The thesis statement should answer a question about the topic you are exploring as a writer. A good thesis statement will express only one main idea and will assert your conclusion about a topic.

Identifying the Main Idea

If you are given a topic to write about, it's important to first do your research and identify some main ideas associated with that topic. If you are writing about a piece of literature or specific work, you'll still need to do research but you will also need to read for key concepts or key ideas within that piece of writing first. Consider rereading the piece of literature to locate the main idea of the writer. Once you have located the main idea, you can then generate an opinion about the idea and create your thesis statement.

Developing the Main Idea

The topic of an essay is the subject, or what the essay is all about. An idea is what the writer says about the topic. The ideas include the main idea, which is then expressed in the form of a thesis statement. The main idea is not arguable like the thesis statement should be; it's simply an idea. Before writing, you should first develop the main idea because you cannot generate an arguable thesis statement about a topic until you have identified what you think of the topic.

Purpose of the Topic Sentence

The main idea of an essay is conveyed through the thesis statement and carried out through the topic sentences. An idea cannot be a statement, but a statement conveys an idea, hence the purpose of a thesis statement to state the point of an idea to convey to the reader in the development of an essay. Topic sentences also express the main idea. It's the first sentence of each subsequent paragraph in the essay and should be followed by supporting details, all supporting the topic sentence, which should support the main idea expressed in the thesis statement.

• Teacher Vision: Establishing the Main Idea
• Indiana University Bloomington: How to Write a Thesis Statement

Alyssa Sellors has been in the field of education for five years, teaching English and journalism at the high school level. In addition to teaching, she has also advised the school newspaper and currently advises the yearbook. As a yearbook adviser, she speaks at national conventions hosted by Journalism Educator’s Association and the National Scholastic Press Association.

What Is a Multi-Paragraph Essay?

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• 1 What Is a Multi-Paragraph Essay?
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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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12 Tips To Make Teaching Main Idea Easier

Teaching students the concept of finding the main idea in a text is tricky. The term has a variety of synonyms and related ideas . There’s scientific proof that interesting but extraneous details can become more memorable to readers than the main idea. Plus, learning about the main idea doesn’t always lead to better performance on standardized tests .  If you’re not seeing tangible results in your students’ test scores you might wonder why you should care about teaching it at all. We’re giving you 12 tips to make teaching main idea to your students easier and to see why teaching this skill matters, even if it’s not directly reflected in test results:

Why is it difficult to teach students to find the main idea?

12 Tips for teaching the main idea to your students

Teaching the main idea with Newsela

According to author and literacy expert Timothy Shanahan, finding the main idea in a text or passage isn’t really a literacy skill . He makes this claim because the main idea is specific to each text. It’s not the same as other literacy skills that students can practice through repetition or even memorization because they’ll never have the same main idea twice. That makes it harder for you to teach them HOW to do this correctly. It’s not like a mathematical formula. They can’t do a repetitive process and get the “correct” answer every time.

Plus there are discrepancies in how students may write or identify the main idea, meaning that even when there’s only “one right answer” there’s also not just “one right answer.” Take an example from the article “Kids are abuzz with activities to help save bees” from our Newsela Earth Month: Environmentalism and Conservation text set :

Both main idea versions in this example are accurate. They both cover the main points of the article, with more or less specificity in certain areas. If two students gave these answers as the main idea of the text, neither would be wrong. 

12 tips for teaching the main idea to your students

Because the main idea can be a difficult concept to teach (and understand!) not every strategy works for every student, text, or lesson. Here are some options you can use throughout the year to help your students practice finding the main idea to make the concept easier to understand:

1. Start with topics

Before you even have students pick up a text, start with a lesson or refresher on identifying the topics of a text. This can be as simple as doing an activity where students have to find the common bond between a few items or ideas. For older students, you could play a game like “Tribond” where you provide three statements and students try to figure out what they have in common. For example, you could ask them what Penguins, Panthers, and Bruins all have in common. They’re all hockey team names (and animals, too!).

For younger students, try a mystery bag activity. Add three or four small items or images with a theme to a paper bag. Call on students to take turns pulling items out of the bag and work together to try to decide what they have in common. For example, a toothbrush, toothpaste, and dental floss all have teeth or tools to clean your teeth in common. These activities help students think about how items and ideas relate to each other, which is a large part of being able to find and state the main idea.

After students understand how to identify topics, you can help them use the same thought process while reading to find connections in the text. You can write these potential topics on the board or have students record them in a notebook. Circle the ones that feel most important or relevant to the text. Then you can model how they should think about which one is the right starting point for their main idea. Ask questions like, What is the author saying about these topics? or How can we write a sentence that describes what this text is about, using our topic as a guide?

2. Teach about the main idea and key details together

The main ideas and key details are two literacy skills that go together. Students can’t find the main idea if they can’t identify key details. They can’t determine what information is a key detail if they don’t have a main idea to connect them all. Instead of teaching these skills in isolation, teach them together. This can help students scaffold the thinking, research, and analysis skills necessary to make meaning from the texts they read .

3. Teach the main idea as part of summarizing

Because of the potential subjective nature of this skill, Shanahan recommends teaching it as part of a larger reading strategy like summarizing. Summarizing helps support students’ reading comprehension by giving them a full overview of a text, either paragraph by paragraph or holistically after reading. It’s easier for students to look at a group of shorter summaries, such as one for each paragraph, and decide which details are MOST important, the ones that make up the one-sentence main idea.

4. Vary the types of texts you use

The main idea is specific to the text you’re reading, so it’s important to help students find the main ideas in different types of texts. Use both literary and informational texts in your lessons. Anything goes: poems, short stories, essays, novels, news articles, speech transcripts. You get the idea. Different types of texts will also vary in length, difficulty, and topic, giving students a wide range of content for practice. The more exposure students have to finding the main idea in different kinds of texts, the better they can get at mastering the concept.

Newsela’s content library helps with this. Newsela ELA has 15,000+ pieces of literary and informational content on topics that align with your curriculum, students’ interests, and everything in between. Text leveling allows you to adjust the complexity of what students are reading to show them how the main idea doesn’t change even when the vocabulary or sentence structure does.

5. Pay attention to how you model finding the main idea

Shanahan recommends what he calls, “the gradual release of responsibility” when teaching about finding the main idea. But how does it work? When you’re modeling the process of finding the main idea, you start by explicitly telling them what to do. Then you pass the decision-making responsibility to them as you practice and repeat the process. Here’s what this might look like when doing multiple read-alouds:

Modeling the right thinking and then giving more responsibility to your students allows them to start finding the main idea independently in any text, not just the ones you cover in class. Newsela ELA annotations can help with modeling, especially when you ask students to highlight key details or remove extraneous ones to help them summarize. 

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6. Add visuals to the text

Adding visuals to written text can help make ideas stick. If your text has little or no images, you can add some to help students connect the words with a tangible concept. When modeling how to find the main idea, you can use free stock images with fair use copyright to illustrate key points of a text.  

For example, if you were teaching with the article “The early history of football’s forward pass,” (in our Super Bowl text set ) you may use images of things like a football, Glenn Scobey Warner, or someone throwing a forward pass to illustrate the main concepts of the article. If images aren’t available for the text or topic you’re covering, you can ask students to draw their own illustrations.

7. Look at the first and last sentences for clues

While the topic or conclusion sentence doesn’t always include the information you need to find the main idea, both can be good starting points for research. They often include at least some clues to the theme, topic, main characters, primary conflict, or resolution of the story, all of which can be key components of writing a main idea statement.

As a pre-reading activity, have students read both the topic and conclusion sentence of the text and have them predict what they think the text will be about. They'll see these sentences again when they read the text (or reread it multiple times for close reading!). Have students hold onto their predictions and after reading have them use key details from the text to support or disprove their predictions. Then have them use all of that information to decide the main idea.

8. Use titles to your advantage

Like the topic and conclusion sentences, the title of the text or article can also provide clues to the main idea. You can do the same pre-reading activity and have students read the title and predict what they think the text is about. They can use that information after reading—with the key details they find in the text—to determine the main idea.

For example, take an article titled “Online posting can have very serious consequences” from our novel study on the book “One of Us Is Lying” by Karen McManus. Students who read this title may predict that the article is about social media, sharing information online, getting in trouble, or other similar topics. They can find key details and evidence to support or refute their predictions as they read. If a text has headings and subheadings you can include these in your pre-reading activity, too.

9. Use keywords

Some texts include keywords or key terms as a text feature. These words and phrases are bolded, italicized, underlined, or otherwise stand out from the rest of the text so students know they’re important. In traditional textbooks, there’s often a glossary in the back that lists the definitions for these terms. With dynamic programs, students can often click the word to view the definition onscreen. Newsela ELA Power Words work like dynamic keywords to highlight Tier III vocabulary words for students, providing background knowledge and context.

Analyzing and reviewing keywords and their definitions can help draw students’ attention to what’s important in a text. You can also have students find synonyms and antonyms for the keywords throughout the passage. Looking for repeated references can help students recognize some of the important topics in a text.

10. Use main idea prompts

If students aren’t sure where to begin when writing a main idea sentence, they may feel overwhelmed. You can use a fill-in-the-blank prompt activity to get them started. Before reading, provide students with prompts like:

The prompt or prompts you choose may depend on whether you’re using an informational or literary text and the complexity of the lesson. Asking students to fill in the blanks can feel less intimidating than creating a main idea sentence from scratch.

11. Provide main idea choices

A text only has one main idea. But literacy skills aren’t math and there isn’t always one right answer. We can use that variety to our advantage when teaching students about the main idea. Do an exercise where you have students read a passage or a text and give them four potential main ideas. Depending on how long you’ve been practicing the skill, you could also ask them to generate four potential main ideas of their own. Next, have students number the four statements in the following convention:

This activity can help students sort through their ideas of what they think a main idea might be while visually seeing how to narrow the information down to just the highlights.

12. Review, review, review

The more you practice, the easier anything gets. You can have students find the main idea of any text you read as a class, or even reading that they do independently. The more opportunities you provide for practice and encourage them to do it on their own, the more they’ll internalize the steps needed to master the skill. The standards and skill-aligned multiple-choice quizzes on all Newsela authentic texts make it easier for you to discover what your students know and where they need more help practicing this skill.

Teaching the main idea with Newsela ELA

Although the main idea is a unique skill, it's easier to teach and track student progress when you have the right scaffolds and support for both you and your students. With Newsela ELA, it’s easy to provide literary and informational texts to help students find the main idea with a variety of relevant, real-world content.

And coming for back-to-school ‘24, Newsela ELA will have updated reporting features that help you look in on students’ skills progress with ease. You can identify classroom trends and patterns with the new class overview module. It provides an aggregate summary of classroom performance. You’ll also see students’ reading skills clearly displayed so you can connect those areas of growth directly to the content you’re searching for on Newsela. Not a Newsela customer yet? Sign up for Newsela Lite to get free access to content and skill-building scaffolds you need to teach students how to find the main idea in your lessons.

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