Engino Mechanical Science: Wheels & Axles

Engino Wheels & Axles Kit teaches youngsters all about this quintessential simple machine! Youngsters will learn about mechanical advantage and how wheels use friction to move objects... all while having fun building 5 separate models! Your child will have hours of fun building a tractor, motorcycle, door, car or car lift, and the included 36-page activity booklike makes...
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