Amazon has got this 143-piece K'NEX Education Stem Explorations: Gears Building Set Building Kit for only $11.66 with free Prime shipping and free returns. It got
4.7 out of 5 stars over 107 customer reviews.
- The set includes 140+ parts for a single child or team of 2 children to build 3 unique geared models: a crank fan, a car window and an egg beater.
- Students will learn about gear configurations, gear ratios, rotational speed, mechanical advantage and more!
- The experiment guide is aligned to National STEM standards and is appropriate for Grade levels 3-5.
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