Jumping Cup Toy
Instead just wrap a rubber band around the long way so it crosses once, then put a cup over it to hide the rubber band and strengthen it. No cutting required. Then use a 3rd cup to launch it.
My Steam LessonMy Steam LessonInstead just wrap a rubber band around the long way so it crosses once, then put a cup over it to hide the rubber band and strengthen it. No cutting required. Then use a 3rd cup to launch it.