(Holding your fingers over the jar will keep the hand and stick from flying into the air with the ball.
You can try placing your finger or fingers in different places over the jar. You can try moving the paint stick forwards and backward on the plastic jar to see what placement will allow the ball to fly the highest. You can try each of the balls to see which one will fly the farthest. Here are some types of balls you may want to try: Then you have select what type of ball you can to try to fling. The hand and brush were placed on the jar so the hand was resting on the ground and the end of the brush is up in the air. We filled the jar with pebbles to keep it from rolling around. The fulcrum or support for the hand and the brush is an old peanut jar. We have found that duct tape does a great job for us. You can try a variety of types of tape is you like. The hand was then attached to a paint stick with duct tape. The cupped area would be where the shot put would fly from. The right and left sides of the wrist were overlapped and taped. I want to use scissors that would easily cut through the cardboard.Īfter the hand was cut out we traced the outside edge of the and and drew on fingers.Ī small slit was cut from the wrist up about three inches. Then we cut out the hand with sharp scissors. It was a little bit thicker than the cardboard from a cereal boxes. #CATAPULT DESIGN IDEAS CRACKER#
We used cardboard from an empty cracker box. You start this experiment by tracing someone’s hand onto a piece of cardboard. Actually I guess I should call it an Olympic STEM experiment.
Adding the ball element made this a STEM experiment. I wanted my son to experiment with a wide variety of balls to see which one would travel the farthest. The payload or shot put is a series of balls. Why not introduce your children to the shot put by creating a catapult that will fling a shot put across your yard. Our shot put is features a bucket that is hand shaped. The shot put is one of the Olympic spots that most children have probably never seen.
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