The AP students had a "Great Rolling Derby" at the end of the winter term. The assignment was to build/find something that would roll to the end of the 6 ft long 8 degree incline that I made in my basement.
There was some creative thinking, elbow grease, engineering, and cookie eating, and we took a moment to remember inertia.
The winner is... Kyle!
Here are the entries, ranked from top to bottom:
Actually, I entered my son Anders, too, but you can see how he placed: