• Write the formula on the board and fill in the equation with the given information as you complete each step. • Remind students that the answers to the questions related to area will have square units because you are squaring the radius. • Last, divide the class into pairs and have partners complete one or more of the “Your Turn” problems, using the properties of circles. When students have finished, have them share their answers as a group. 4 Reflect: Ask students to respond in writing to the following questions: Why are some people so passionate about creating wind turbines? After students have finished writing, call on volunteers to read their responses. Then engage them in a structured group discussion. As a class, discuss each response. 5 Group Activity: Go to “As the Turbine Turns,” page 80 of the student handbook. Divide the class into teams and assign each team one or more problems to solve. When students have finished, ask each team to talk through their answers. 6 Quick Check: Have students complete one of the “Exit Slips” on page 82 of the student handbook. A: On Level; B: Advanced. 7 Additional Practice • “Drawing Circles,” page 81 of the student handbook. Students use a pencil, a ruler, and a compass to draw circles and answer questions • You may encourage students to take a break and read the Bonus! feature that follows this lesson. Students will read about bison, America’s first national mammal. How does this article connect to the article they have just read?
For answers, go to the Answer Key that begins on page 48 of this book.
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