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part brains
looping style
Through 26 model-building exercises
He stomps off to confront the thief
Simple Machines hammer part brainsThrough 26 model building exercises, youll investigate all six classic simple machines wheels and axles, levers, pulleys, inclined planes, screws, and wedges as well as gears. Start off with simple models to guarantee a firm understanding of the basic principles at play, and then move onto larger, more complex models to push the machines harder and see how they can work together. Also included is a specially designed spring scale so that you can
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