Uncle Norm loves to play with his toy cars. He's "experimenting" with angles and speed, but he needs a ramp. The Rads consult with an architect who teaches them about angles and how slope can affect the way a ramp works. They talk about triangles, and how different angles can change the speed of the cars.

Originally released by GAPC Entertainment, Inc., 2011. Streaming video file encoded with permission for digital streaming by Infobase on October 13, 2014.

Slope --(8:03) -- Art in Math -- (6:28).