So we're all at home all the time - missing everyone! Let's find a way to have some fun together. I can't think of a better way than designing fun stuff with simple machines! How about sending something through the air? Now you're talking... let's build a catapult. First, watch the BrainPOP,jr movie below on simple machines. Then follow the directions to build a simple catapult. Try it out. See if you can tell what simple machine is used.