Three young heroes test their strength, mettle, and physics knowledge against a diabolical assortment of obstacles they can only solve with the clever application of simple machines - ramps, wedges, screws, levers, pulleys, wheels, and axles. Can they push past these puzzles and their own personal problems over six chapters - one for every simple machine - and prove themselves worthy Science Ninjas?
Along the way, readers 8 and up learn principles of force, work, mechanical advantage, and compound machines. There's even an illustrated appendix of experiments readers can do at home to build their own simple machines!
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