UNIT X UNIT 6 | 231 FORMATIVE ASSESSMENT DIFFERENTIATED INSTRUCTION Scaffold Have students revisit the Essential Question: How can inventions help the world? Lead students in a discussion by relating this to contemporary times and inventions. (Sample answer: The electric car is an invention that can help the world stop global warming.) Amplify Have students work together in pairs to generate additional academic vocabulary around the topic of astronomy. Direct them to identify at least four additional words and create a visual glossary of terms, illustrating each one and including sentences to explain their meanings. Talk and write: New vocabulary Ask and answer in pairs: What are some new words from the lesson? What do they mean? Write three dictionary entries. Choose one new word from the lesson. Write a sentence using the word. B Use contextual support to develop vocabulary Ask: What does an astronomer do? (They use telescopes to look at the position and movements of things in space.) Have students use the vocabulary from the story to orally answer the question. Then echo read each sentence in Activity B. Give students time to complete the activity. ANSWERS astronomer, telescope, movement, distance, improved, positions C Understand a diagram Read the directions and have students complete Activity C in pairs. Then have volunteers share their answers with the class. ANSWERS 1. Earth is 93 million miles from the Sun. Earth is 8.6 light years from Sirius A. 2. The Sun looks brighter than Sirius A from Earth because Earth is much closer to the Sun than to Sirius A. D • Make connections Tell students to look at the image of Rittenhouse and his telescope on page 230. Ask: Do telescopes look different today? How have they changed? Have you ever seen a telescope? What did it look like? (Yes, they look different today. They are more modern; they are made of plastic and are bigger. Some are even on mountain tops.) • Use new academic language Introduce the word observe and confirm understanding. Then have students work in small groups to find a word in the directions to Activity D that means observe. (see) Make sure that each group has found the right word. Then have each group discuss the questions. ANSWERS Sample answers: I see the Moon, stars, planets, and sometimes satellites. Yes, I have used a telescope. I saw the Moon and the craters on its surface. Practice Book p. 126 Assessment Program p. 108 COMMUNICATE PRACTICE B Use the vocabulary Complete the information about David Rittenhouse’s inventions with words from the text. David Rittenhouse was an who made his own . He used it to see Venus. He recorded the of Venus. Then, he measured the between Earth and the Sun. Rittenhouse also a model of the solar system. His model showed where the planets were, or their . The model moved like a clock to show how the planets move. C Discuss Look at the diagram and answer the questions. 1. How far is it from Earth to the Sun? How far is Earth from Sirius A? 2. Sirius A is 25 times brighter than the Sun. Why does the Sun look brighter than Sirius A from Earth? D Making connections What do you see in the night sky? Have you used a telescope? What did you see? Earth Sun 93 million miles 8.6 light years Sirius A CON22_ArtSpecForm_L5U6_p231 Words to Use astronomer telescope movement distance positions improved 231 UNIT 6 UNIT 6 / CONNECT TO SCIENCE
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