Explore STEM concepts while building different geared models! using the materials included in this set, elementary-school aged children will be engaged and energized as they further their knowledge and understanding of science, technology, engineering and math concepts. The set includes 140+ parts 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! Get the deal at Amazon here for only $14.99: K’NEX Gears Building Set
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Barbara Tryon says
These are wonderful my grandson has these.
Marie says
Great toys , kids love them!