Given: scissors, 1 sheet of typing paper, clay, tape, 2 pencils, rubber band.

You have one minute to think and three minutes to respond. You may talk at any time. With the materials provided, you must build a catapult within a one-foot square. At the end of three minutes, you must place a target where you want. You must then launch a ping pong ball by moving only one thing in one direction. The closer you come to the target, the more points you get.

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