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How Many Times Does a Radius Square Fit into the Circle?

Alfinio Flores and Troy P. Regis 

March 2003, Volume 8, Issue 7, Page 363

Abstract:
Article presents interesting ways to approach pi. It illustrates a way in which students can estimate the ratio of the area of the circle to the radius square, and also helps students understand why the same value of pi appears in both formulas for the circumference and the area of a circle. Includes an activity sheet.

Keywords:
Article
Grades 6-8
Area
Teacher
Lesson Plans
Perimeter / Circumference
Reasoning and Proof