Amazon is offering the K’NEX Intro to Simple Machines: 198 Piece Gears Set for only $17.89 Prime shipped. That’s more than $22 off the regular price and the lowest we’ve seen it go at Amazon. This STEM building set for grades 3-5 comes with pieces that can be clicked together to build 7 fully functioning gear models of real-world machines. “This activity will keep your children occupied for hours!” Rated 4.6/5 stars by 109 Amazon shoppers. 

Here are some more toys on sale:

Sprocket Gears! Spur Gears! Rack & Pinion! And More! The K’NEX Education Gears set is designed to introduce students to the scientific concepts associated with gears. Students are provided with the opportunity to acquire skills using a hands-on, inquiry-based approach to information and concepts as they build, investigate, discuss, and evaluate scientific principles in action.

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