Circle Area
Description – Develops the formula for calculating the area of a circle. Lesson uses animation to break the circle into wedges, which are arranged as a parallelogram. Derives area equals pi times radius squared from that.
Activities – Multimedia Tutorial
Objectives
- Learn the to use a grid to estimate a circle's area
- Learn the formula for the area of a circle
- Learn to calculate a circle’s area give its radius
- Learn to calculate a circle’s area give its circumference
- Learn to calculate the area of a washer shape
Tags
triangles, polygons, perimeter, area, Pythagorean Theorem, Pi, circles, circumference
Teacher Resources
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