Little Einsteins Toys
Honest reviews on einsteins toys
Thursday, November 21, 2013
Buy American Educational Friction on an Incline Plane Device, 26"
Customer Ratings:
simple and clear device that is what i like about it.
it is easy to assemble.
It supports the theory very goord.
as set of weights, i would add, to make the difference in force clear on an incline.
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