After learning about simple machines, Mrs. Wagner's 7th grade class wanted to take things a step further by developing a Rube Goldberg machine.
A Rube Goldberg machine is a deliberately over-engineered contraption in which a series of devices that perform simple tasks are linked together to produce a domino effect in which activating one device triggers the next device in the sequence.
The goal was to turn off the light switch.
The first video has a catapult!