Following on from Lego’s incredibly successful Crazy Action Contraptions (9781591747697), 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. It comes with everything you need, including 20 LEGO pieces, instructions and paper ramps.
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