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Main Idea and Supporting Details

Main Idea and Supporting Details. Main Idea. The main idea is the “ big point ” or the most important idea that the writer is communicating to the reader. Often the reader can find the main idea just by looking at the title.

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Main Idea and Supporting Details

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  1. Main Idea and Supporting Details

  2. Main Idea • The main idea is the “big point” or the most important idea that the writer is communicating to the reader. • Often the reader can find the main idea just by looking at the title. • For example, a passage titled: “Why Students Should Have Less Homework” will include reasons for assigning students less homework.

  3. What’s the Point? • Read this short paragraph: Engineers create wealth for society. So, tennis is a game and the resources of the earth are scarce. Have you gone mad? Thus the only solution is to educate the public on being socially responsible. DID THIS MAKE SENSE?????

  4. OF COURSE NOT! • It didn’t have a MAIN IDEA! • We would go crazy if texts were written with no main idea. • The paragraph you just heard was difficult to understand because it was made up of different ideas that did not link. There was no common thread. • The good news is that normal passages have main ideas!

  5. MainIdea • Main Idea - is like the heart of the text or a paragraph. • The main idea is the controlling idea. • All the other supporting details in a text or a paragraph should tell us more about the main idea.

  6. Ask Yourself…. WHO or WHAT is this passage about?

  7. The Topic Sentence • Many paragraphs have topic sentences that indicate the main idea. • Find the topic sentence in this paragraph: Homeless people have many problems. In winter, it’s hard to stay warm and it gets too hot in the summer. It’s also hard to keep things safe without a home. The worst part of being homeless is the lack of privacy.

  8. Supporting Details • Supporting details prove the value of the main idea. What are they here? Homeless people have many problems. In winter, it’s hard to stay warm and it gets too hot in the summer. It’s also hard to keep things safe without a home. The worst part of being homeless is the lack of privacy.

  9. Supporting Details Homeless people have many problems. In winter, it’s hard to stay warm and it gets too hot in the summer. It’s also hard to keep things safe without a home. The worst part of being homeless is the lack of privacy. The supporting details are in bold. There are THREE points to support the topic sentence or main idea.

  10. “The students had fun on their field trip.  They visited  the Marine Museum.  They were able to tour a tug boat and buy souvenirs in the gift shop.  After the tours the students ate a picnic lunch in the park and played with their friends.” The underlined portion of the paragraph is the main idea and is stated for the reader. The other sentences in the paragraph are the supporting details.

  11. You try it… “The rain forest is home to many creatures. Monkeys, snakes, and frogs live in the rain forest. Butterflies and ants also live in the rain forest.” What is the main idea? A) Butterflies and ants are other creatures that live in the rain forest. B) The rain forest is home to many creatures. C) Monkeys, toucans and macaws live in the rain forest.

  12. The Answer Is… B) The rain forest is home to many creatures.

  13. Let’s try another one… “Soccer players learn many skills when playing soccer. Soccer players learn how to dribble and pass the ball. They also learn how to control the ball so they can eventually score. Most importantly, soccer players learn how to work together with their teammates.” What is the main idea? A) They also learn how to control the ball so they can eventually score. B) Soccer players learn how to dribble. C) Soccer players learn many skills when playing soccer.

  14. The Answer Is… C) Soccer players learn many skills when playing soccer.

  15. Main Idea Review • The main idea is the “big point” or the most important idea that the writer is communicating to the reader. • Ask yourself the following questionwhen determining the main idea: Who or what is this passage about? • Many paragraphs have topic sentences that indicate the main idea.

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