Main Idea and Supporting Details of Informative Text - PowerPoint PPT Presentation

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Main Idea and Supporting Details of Informative Text

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  1. Main Idea and Supporting Details of Informative Text 1

  2. Today we will discernconcepts presented in text. • discern - to see something that is not very clear or obvious • concepts - idea • text - the main body of a book or other printed material as distinct from the introduction, index, illustrations, and headings

  3. discern • To perceive or recognize something The detective was able to discern the handprints with his magnify glass. 3

  4. concept • idea We learned a new concept about fractions. 4

  5. text • the main body of a book or other printed material as distinct from the introduction, index, illustrations, and headings He enjoyed reading the text in the book. 5

  6. Discuss with your partner an idea that explains what all these people are doing? • All these picture show____________

  7. Main Idea What is a main idea? • Paragraphs have a main idea. • The main idea tells you what the text is about. • The main idea is the most important part of a paragraph. Many newborn rattlesnakes do not survive their first year of life. A baby rattlesnake is only about ten inches long. Although baby rattlesnakes have short fangs and a poisonous bite, they are often eaten by birds and animals. The adult rattlesnakes do not raise their young. The young snakes are entirely on their own. Many die of hunger. In the winter, they die if they do not find a warm place where they can hibernate.

  8. Supporting Details • The supporting details are the sentences that describe and give more information about the main idea. • These supporting details make the main idea stronger. Many newborn rattlesnakes do not survive their first year of life. A baby rattlesnake is only about ten inches long. Although baby rattlesnakes have short fangs and a poisonous bite, they are often eaten by birds and animals. The adult rattlesnakes do not raise their young. The young snakes are entirely on their own. Many die of hunger. In the winter, they die if they do not find a warm place where they can hibernate.

  9. Idea Tree

  10. Read the Passage and Choosethe Main Idea Niagara Falls is located North America. It is on the Niagara River halfway between Lake Ontario and Lake Erie. Niagara Falls is located on the American and Canadian border. The American Falls is 167 feet high. On the Canadian side, the Horseshoe Falls is 161 feet high.

  11. Question • What is the main idea of the passage? • Remember main idea is what the text is about.

  12. Niagara Falls is located in North America half way Lake Ontario & Erie Canada US border American Falls 167 feet Horseshoe Falls 161 feet

  13. Find the Supporting Detailsin this Passage • The Erie Canal changed the way people moved goods in the 1800’s. The 363 mile canal connected Albany, New York to Lake Erie in Buffalo for the first time. When the Canal opened in 1825, building supplies and goods could be transported quickly and cheaply across New York State. Canal boats pulled by mules carried people and supplies across New York.

  14. Erie Canal changed the way people transported goods moved/transport goods & supplies 363 miles connects Albany to Lake Erie Cheap to move goods canal boats pulled by mules

  15. Quick Review What is the main idea of a paragraph or essay? The big idea of the text. What are supporting details? Sentences that describe the main idea.

  16. It is important to identify Main Ideaand support because: • You can understand reading better • You can use factual support statements to explain your idea

  17. Create an idea tree that identifies the Main Idea and Supporting details of this passage Millions of whales have been hunted and killed since the early days of whaling in the 1700’s.Whales were killed to make things like fuel, oil, umbrellas, and skirt hoops made of whale bones.These days whales are killed to make soap, makeup, and animal food.