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Personalization: Laser-engraved names
Helicopter Kumiki Puzzle is a 15-piece wooden brain teaser shaped like a real helicopter
This puzzle is based on a problem introduced by British engineer Brian Barwell in the Journal of Recreational Mathematics (Oct 1969)
Dimensions of the puzzle in the wooden cover are 4
A gift for teacher appreciation week
Aristotle’s Wheel Paradox Puzzle - Geometry & Physics Demonstration skating puzzle Personalization: Laser-engraved namesAristotles Wheel Paradox Wooden Geometry & Physics Demonstration Explore one of the most fascinating mysteries in mathematics with Aristotles Wheel Paradox, a hands on wooden puzzle that brings an ancient problem to life. This elegant demonstration is based on a paradox studied for centuries: when two concentric circles roll together, they appear to travel the same distance, despite having different circumferences. How can both wheels complete one
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