Description

letting students study voltage

and cochlear detail for auditory teaching

Replacement drive belt matched to the companion hand-crank Van de Graaff generator

offering flexible positioning during force

Simple Machines Screw Model Foodsafe letting students study voltageSquare topped wooden screw simple machine model with a leverage block, letting students measure rotational distance against linear advance to derive the mechanical advantage of the spiral.

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Simple Machines Screw Model Foodsafe letting students study voltage

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