YouTubeMathcastsorScreenCast Mathcasts (if YT is blocked)
GeoGebra InterActivity Directions for InterActivity
Click on the play button (bottom left) to turn the wheel. Click on the Move tool. 1. Click and drag the nS slider to change the number of spokes.2. Click and drag the rW slider to change the radius of the wheel. 3. Click and drag the blue center point A to move the wheel.