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How Toys Work: Forces and Motion (Science Readers)
How Toys Work Forces and Motion - Science Readers Author:Lisa Greathouse Readers won't have to disassemble their favorite toys to discover what makes them work. This book explores electric, magnetic, and motion-powered toys from design to function. It introduces readers to the six simple machines and explains how they use force and motion to do work. Not every toy is a technological marvel. Readers learn about ti... more »me-honored favorites including the rocking horse, Slinky, and rattles.« less