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Exploring Science: Machines: With 20 Easy-To-Do Experiments And 300 Exciting Pictures
Chris Oxlade
Hardcover (Armadillo, Sept. 7, 2016)The story of technology, from simple gears and levers to high-tech gadgets, with science projects to try yourself, perfect for 8-12 year-olds at home or school.
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Machines: Gears * Levers * Pulleys * Engines Exploring Science by Chris Oxlade
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Hardcover (Armadillo Books, March 10, 1890)None