UNIT X UNIT 7 | 251 DIFFERENTIATED INSTRUCTION Scaffold To help students answer the Check In questions, write these sentence frames on the board: Summers in the tundra are _____. Winters in the tundra are _____. Animals have adapted by ______. Direct students to answer the questions in complete sentences. Amplify Have students research other animals that migrate, hibernate, or develop physical adaptations to the tundra. Have them to share what they discover with the class. Reading • Match images to words Read the paragraph aloud sentence by sentence. Ask students to look at the images of the reindeer in the tundra and an Arctic hare while you read. Ask: Do the images help you understand the text? If so, how? • Read closely Review the meanings of the vocabulary words migrate and hibernate, referring students to page 246 if needed. Read the paragraph aloud again sentence by sentence. Check for comprehension of terms such as behaviors, north, south, in search of, fat, energy, and store. Point out that the word store has more than one meaning; usually it means a place where you buy things, but here it means to put away to use later. • Read for relevant details Draw a chart with the headings caribou and reindeer, squirrels, and Arctic hare on the board. Then write on the board: How do these animals survive the winter? Have students copy the chart, read the text closely, and complete the chart. Then go over answers as a class. (caribou and reindeer – travel south to look for food; squirrels – eat a lot of food they store as fat); Arctic hare – develops an extra layer of fur and fat) Check In Ask and answer questions Review the meaning of compare and contrast. Have pairs ask each other the questions. Review answers as a class. ANSWERS 1. Summers in the tundra are very bright. There is a lot of sunlight. They are short and dry. Winters in the tundra are dark and cold. 2. Animals have adapted by migrating, hibernating, and developing layers of fur or fat to keep warm. PRACTICE Animals have adapted to the tundra with special behaviors: migration and hibernation. Caribou and reindeer migrate from north to south in search of food. They travel up to 3,000 miles each year. Animals like squirrels hibernate. Before hibernating, these animals eat a lot of food, which they store as fat. During hibernation, their bodies change the fat to energy. Other animals, such as the Arctic hare, have developed physical adaptations to the tundra. The Arctic hare has an extra layer of fur and fat to keep it warm. Animals with physical adaptations can survive the winters without migrating or hibernating. an Arctic hare reindeer in the tundra CHECK IN 1. Compare and contrast What are summers and winters like in the tundra? 2. Comprehension How have animals adapted to life in the tundra? 251 UNIT 7 Biomes of the World UNIT 7 / READING
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