Fun, Puzzles, Travel
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|Brain twisters, arranged by approximate level, and designed for the most part to require no particularly advanced mathematical skills. Illusions include impossible triangle, Muller-Lyer, bad box, and Colours.|
|Levels:||Middle School (6-8), High School (9-12), College|
|Math Topics:||Basic Algebra, Basic Operations, Graph Theory, Euclidean Plane Geometry, Logic/Foundations|
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