(Work in progress!) Watch as points on a rectangular graph move across the screen to take their place as points in the polar representation.
The skill of turning a rectangular graph into a polar graph is very useful. This GeoGebra file lets you watch the points on both curves as you change the value of theta.
This file shows how polar areas are traced out, which is a bit different from how rectangular areas are accumulated.
This GeoGebra file is designed to show two polar curves graphed at the same time. It can be helpful to understand the difference between when two polar curves passing through the same rectangular point vs. being at that point for the same value of theta.