Explore and recognize that how fast or how slowly one gear makes another turn depends on the number of teeth on the gears and their position.
Explore and recognize that the effectiveness of a lever depends on the arrangement of the pivot point, effort and load.
Identify a wheel and axle as a simple machine and where friction might be found.
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To inquire about purchasing more than 99 of one item, please call 800-362-4308.
To inquire about purchasing more than 99 of one item, please call 800-362-4738.