Published: February 8, 2017
Total Running Time: 00:03:35
A classic carnival game involves rolling a bowling ball on a track so that it goes over a hill, into a valley, and then partway up a second hill, until it stops and reverses direction. To win, the ball must stop in the valley between the hills on its way back. Our small-scale version of this game uses a large marble and a bent-steel shelf bracket to explore energy transformations.