How would you storm the castle? Teams of students redeemed "siege shekels" to buy Thames and Kosmos building set components, string, dowels, rubber bands, and paper clips to solve two problems. First, how to construct a catapult or similar device to launch ping pong balls into a "castle" and second, how to retrieve those ping pong balls from many feet away.
Thomas middle school student volunteers operated the store.
fishing for ping pong balls
Attack!