UNIT X UNIT 7 | 277 FORMATIVE ASSESSMENT Write: Area and volume Have students complete these sentences: _____ measures the amount of space that a two-dimensional figure covers. _____ measures the amount of space that a three-dimensional object occupies. DIFFERENTIATED INSTRUCTION Scaffold To help students answer the questions in Activity C, provide these sentence frames: _____ are used to measure area. I can measure _____ and multiply _____. _____ are used to measure volume. Amplify After students complete Activity C, have groups write the steps for a similar activity using different measurements. Then have them trade activities with another group and solve each other’s problems. B Apply math knowledge Read the instructions aloud and ask a student to read the question aloud. Say: The letters on the map are abbreviations for the different states. What is the abbreviation for Wyoming? (WY) Have students answer the question in pairs, referring them to the text on page 276. Then go over answers as a class. ANSWERS You need to know the length and width of the state. C Solve a multi-step word problem Ask volunteers to read the instructions and the questions aloud. Check that students understand the task. Display the graph paper and cubes to students to assist comprehension of those terms. Then have students complete the activity and answer the questions with a partner. Monitor and check that pairs are following the steps correctly and referring to the text on page 276 for guidance. Review answers as a class. ANSWERS 1. Length and width are used to measure area. 2. I can measure the length and width and multiply those two numbers. 3. Length, width, and height are used to measure volume. 4. I can measure the length, width, and height and multiply those three numbers. D Make connections Ask a volunteer to read the instructions aloud. Then ask two volunteers to read the model dialogue. Brainstorm objects in the class that students can measure and write them on the board. Have students work in groups to find and measure objects before they join another group and guess the objects. Practice Book p. 150 Assessment Program p. 130 PRACTICE COMMUNICATE CO UT NE WY ID MT ND SD B Read. Answer the question. Wyoming is a state in the western United States. It is home to the Rocky Mountains and the eastern grasslands. In the Northwest is Yellowstone National Park with its natural wonders. Look at Wyoming’s shape. What information do you need to find the area? C Complete the activity. Then, answer the questions. • On a sheet of 1-inch graph paper, draw a 3-by-3 square. • Find the area of the square you drew. • Place one 1-inch cube on each square of the square you drew. • Place two more 1-inch cubes on top of each cube you placed on your square. • Find the volume of the shape you made. 1. What units are used to measure area? 2. How can you find the area of the square you drew? 3. What units are used to measure volume? 4. How can you find the volume of the square you drew? D Making connections Find three objects in the classroom. Measure their areas. Share your measurements with another group. Can the group guess which object matches the measurement? We measured this object. It is 54 inches squared. What is it? Is it the dictionary? UNIT 7 277 UNIT 7 / CONNECT TO MATHEMATICS
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