Exploring Circle Area with Radius Squares (pp. 59--64)

Kristyn Walters


The author describes an activity designed to foster student understanding of the formula forthe area of a circle using radius squares. In the lesson, sixth graders discover thatπnumber of radius squares are needed to cover a circle.

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Allen, K., & Schnell, K. (2016). Developing mathematics identity. ​ Mathematics Teaching in theMiddle School, ​21(7), 398-405.

Flores, A., & Regis, T. P. (2003). How many times does a radius square fit into the circle?. Mathematics Teaching in the Middle School, ​8(7), 363.

Lappan, G., Phillips, E.D., Fey, J. & Friel, S.N. (2014). ​ CMP Filling and Wrapping . ​ Boston, MA: Pearson.


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