Simple Machine Experiments Using Seesaws, Wheels, Pulleys, and More
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More About This Title Simple Machine Experiments Using Seesaws, Wheels, Pulleys, and More

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Have you waited until the last minute to start your science project? Don't worry, award-winning author Robert Gardner has you covered! Each experiment in SIMPLE MACHING EXPERIMENTS USING SEESAWS, WHEELS, PULLEYS, AND MORE follows the scientific metho
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