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Circle Area Formula

Supports the conceptual understanding of where the formula A=π*r² comes from.

Author: Nevil Hopley

Topic:  Mathematics

Tags: Circle theorems, Area

Circle Angles

Seven activities in which students investigate angles in circles using basic geometric constructions.

Author: Barrie Galpin

Tags: Angles, Circle theorems

Optimizing the sheep pen

Discussion of seven different approaches to an optimization problem

Author: Barrie Galpin

Tags: Various topics, Circle theorems