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Product Information Add medieval interest to your physical science lessons with this fascinating weapon of destruction. This versatile apparatus can be set up as a catapult or as a counterbalanced trebuchet. Developed by Jeffrey Robbins, this device is an excellent combination of rotational motion, projectiles, gravity and torque. One catapult/trebuchet set is included along with a rubber ball projectile, rubber band, and assembly and classroom instructions. For grades 5–12.  Tell a Friend about this item
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