A catapult is a lever, a stick or beam propped up by a fulcrum (a pivoting point). A lever will magnify the force you put on it if the fulcrum (the pivoting point) is closer to your force than it is to the load.
The catapult magnifies your force to throw a pompom in this activity. The larger the force, the farther the pompom goes.
These activities are part of Science World's Big Science for Little Hands program. They were developed and tested with Preschool and Kindergarten educators.
Gadgets and Contraptions printable guide