UNIT X UNIT 2 | 55 DIFFERENTIATED INSTRUCTION Scaffold • Work with students in a small group to help them compare and contrast the human-made world wonders with a Venn diagram. They could add a third circle to their previous Venn diagram. • Then have students add their notes of comparison to their notebooks. Students can retell what they have learned to a partner. Amplify Have students research videos that show different natural world wonders. Have them choose one world wonder and give a brief presentation about it. Reading • Use visuals to support comprehension Have students look at the pictures on pages 54–55. Say: What are some similarities and differences between the three human-made world wonders you’ve read about so far? • Use new vocabulary Ask volunteers to identify the word in yellow highlight. (symbol) Read the sentence aloud. Ask: How were these Stone Spheres a symbol of power? Have students use the word symbol in their answers. • Visualize Ask students to identify words on page 55 that help them to visualize the world wonder. • Compare and contrast Have students find and underline facts that help them to contrast the different natural world wonders. • Generate questions during reading Ask students if they have any questions about what they have learned so far. If they need prompting, provide an example, such as How did they use heat to remove parts of rock to form spheres? Guide students to discuss their questions with each other and offer answers and ideas. • Retell to confirm understanding Have students work in pairs to retell the text thus far. Remind them to use words that signal order, such as first, then, after that, next, and finally. Listen in to confirm students comprehend the information. Check In Ask and answer questions Give students time to ask each other the questions and formulate answers. Then discuss answers as a class. ANSWERS 1. Sample answer: tennis ball, baseball, apple, orange, lime; 2. They think people used stone tools and fire to make the spheres. PRACTICE Some people wonder how the spheres were made. It seems mysterious. However, archeologists say people made the spheres with stone tools. They also think people used fire. They used the heat to remove parts of rock to form spheres. Some of the spheres are perfect, but others aren’t. Archeologists have different ideas about why people made the stones. Some think they were a symbol of power. The villages with the most and the roundest spheres had more power. Others think they were symbols of the Sun and Moon. Today, people can see some of the stones at museums in Costa Rica. CHECK IN 1. Visualize What objects are about the same size as the smallest stone spheres? 2. Comprehension How do archeologists think people made the spheres? 55 UNIT 2 Secrets of the Ancient World UNIT 2 / READING
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