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Grade 6: Exploring c/d = pi

Introduce your math class to the perimeter of a circle. Teach them that pi describes the relationship between the circumference and the diameter. As a hands-on investigation, pairs or small groups use string to compare these two values on different circles that you provide (Consider a cookie, pizza, paper plate, etc.). They record their data in a chart and then calculate the ratios of c to d. Finally, they graph the data and discover the relationships! This is an outstanding lesson plan that brings ratio and proportions around!

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CCSS: Adaptable
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Lesson Plans
Instructional Strategies
Inquiry-Based Learning
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