HookS Law Spring Set, Set Of Five Different Springs Constants, The Set Has Five Different Springs Constants For In Depth Investigation With Above HookS Law Apparatuses.
Stem Explorations- Gears Building Set, Age: 8+, Set includes 140+ parts for a single child or team of 2 children to build 3 unique geared models: a Crank Fan, Car Window, Egg Beater, elementary-school aged children will be engaged in understanding Science, Etc.
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