This activity can help students learn the relationship between angles in radians and degrees visually through a PIE! Students should have covered the basic concept of radian measure. So this activity provides the learner a simple and easy to form mental model of switching between degree and radian measure

 This resource is downloadable from Geogebra Tube at: http://tube.geogebra.org/material/show/id/mGXJREDy 

Instructions 

Click on the navigation button to move through the activity.

Change the number of parts to see the PIE divided into more parts.

PIE Model for Relationship between Radians and Degrees