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Build your own simple model AeroplaneInteresting fact: World War I was the first major war where air..
Build your own model of the Catapult, one of the "game changing" weapons in Historic times.Interesti..
Build your Own Road Scraper.Fun fact: The Caterpillar is a large piece of equipment which is used in..
Build a Rubber Band Car explaining the principles of Kinetic EnergyYou input potential (stored) ener..
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