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Chapter 4: Identifying the Stated Main Idea Sentence

and the

Supporting Details

of a Paragraph

© 2008 McGraw-Hill Higher Education Chapter 4: Identifying the Stated Main Idea Sentence and the Supporting Details of a Paragraph 2

The Skill

Every paragraph has a topic.

Every paragraph has a main idea.

When an author includes a sentence in a paragraph that tells his or her most important point about the topic, that sentence is called the stated main idea sentence.

© 2008 McGraw-Hill Higher Education Chapter 4: Identifying the Stated Main Idea Sentence and the Supporting Details of a Paragraph 3

Main Idea

The main idea answers the question,

“What is the author’s one most important point

about the topic?”

© 2008 McGraw-Hill Higher Education Chapter 4: Identifying the Stated Main Idea Sentence and the Supporting Details of a Paragraph 4

Characteristics of a Main Idea Sentence

Must always contain the topic (the word, name, or phrase that tells who or what the paragraph is about)

Must always make complete sense by itself (even if you couldn’t read the rest of the paragraph)

Must be a general sentence that sums up the details in the paragraph

© 2008 McGraw-Hill Higher Education Chapter 4: Identifying the Stated Main Idea Sentence and the Supporting Details of a Paragraph 5

Location of the Stated Main Idea Sentence

Can appear anywhere in a paragraph:

Most often it appears at the beginning.

The next most likely location is at the end.

The third possibility is somewhere else within the paragraph.

Regardless of where it appears, it will have supporting details that explain more about it, give examples of it, or prove it.

© 2008 McGraw-Hill Higher Education Chapter 4: Identifying the Stated Main Idea Sentence and the Supporting Details of a Paragraph 6

How to Test the Sentence You Have Identified as the Stated Main Idea

When you think you have located a stated main idea sentence, see if it meets these criteria:

1. The sentence contains the topic.

2. The sentence tells the author’s most important point about the topic.

3. The sentence makes complete sense by itself.

© 2008 McGraw-Hill Higher Education Chapter 4: Identifying the Stated Main Idea Sentence and the Supporting Details of a Paragraph 7

Main Idea Cadence

It’s important that you find The point the author has in mind.

The main idea is its name,But “topic sentence” is the same.

The main idea is top-shelf;It makes sense all by itself.

And never once should you doubt it:Details all tell more about it.

This sentence has the topic, too.It gives a summary or overview.

Stated main ideas you can find,So highlight them or underline.

© 2008 McGraw-Hill Higher Education Chapter 4: Identifying the Stated Main Idea Sentence and the Supporting Details of a Paragraph 8

Supporting Details = Additional Information to Help You Understand the Main Idea

Details consists of specific information such as examples, explanations, descriptions, proof, and statistics.

Who, what, when, where, why, how? The answers will be in the details.

© 2008 McGraw-Hill Higher Education Chapter 4: Identifying the Stated Main Idea Sentence and the Supporting Details of a Paragraph 9

The Edge: Pointers from the Coach

Only ONE sentence can be the stated main idea in a paragraph.

Avoid choosing a sentence just because it interests you or you think it sounds important.

Be sure you understand the sentence. The main idea is NEVER a question. Examples are details that support the main idea, so

examples cannot be the main idea. Watch for words or phrases authors use to signal their

main idea: The point is, It is important, Thus, etc.

© 2008 McGraw-Hill Higher Education Chapter 4: Identifying the Stated Main Idea Sentence and the Supporting Details of a Paragraph 10

The Edge (continued)

Read the entire paragraph before you decide if there is a stated main idea sentence.

Longer selections (such as textbook sections, essays, articles, and editorials) can have overall stated main ideas.

Locating the main idea is a skill that underlies several important study skills, such as marking a text, outlining, making concept maps, and writing summaries.

© 2008 McGraw-Hill Higher Education Chapter 4: Identifying the Stated Main Idea Sentence and the Supporting Details of a Paragraph 11

The Edge: Pointers about the Stated Main Idea and Supporting Details

Main idea and details are not the same. The main idea is general. Details are specific. Examples are always details. Underline the main idea, but number the details in a

paragraph. Details are often presented in a bulleted, numbered, or

lettered list. Details are often introduced by In addition, also,

moreover, another, next, then, last, finally, etc. The main idea may give a clue about the number of

types of details: “There are four categories of galaxies.”

© 2008 McGraw-Hill Higher Education Chapter 4: Identifying the Stated Main Idea Sentence and the Supporting Details of a Paragraph 12

Main Idea and Supporting Details “House”

Main Idea

Supporting Details