Why Pi?

Students use the relationship between circumference and area to derive the formula for the area of a circle.

By Amplify Classroom

7th Grade

Math

Today’s Goals • Explain that the relationship between the radius and area of a circle is not proportional. (Reading, Writing, Speaking, and Listening) • Explain how to derive the formula for the area of a circle by rearranging a circle into a triangle with the same area. (Reading, Writing, Speaking, and Listening)