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Make amazing moving machines in Lego Chain Reactions! Children can build eight simple machines that can be combined to set off a chain reaction. They can use all the included LEGO pieces in conjunction with their own collection to build the contraptions and record all their experiments in the pages of the book.
Build four brilliant balloon-powered racers in Air Power. Have rocket-propelled fun making a hovercraft and an original Klutz balloon-powered rocket! Includes five balloons, straws, wheels, axles, two mouths pieces and stickers! Everything is explained with clear building instructions and understandable scientific explanations.
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