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Recreational Mathematics
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Demonstrations 1  20 of 1205
Substitution Tilings
Updated this month
Circle Rolling on a Curve
New this month
Happy Pi Day!
Primes in the Heegner Fields
Eisenstein Triples
Baseball Card Collecting
Magic Zero Hexagons
Mondrian Art Problem
Generating the Surreal Numbers
Egyptian Multiplication
Penrose Rhombus Tilings by Projecting Golden Rhombi 2
Path of an Ant on the Diameter of a Rolling Circle
Rauzy Fractals as Stepped Surfaces
Bad Fraction Simplification
Path of an Ant on the Diameter of a Circle Rotating on the Unit Circle
Dice Transitivity
A Grill for Secret Writing
Dissecting One Isonona Triangle into Two
Isonona Triangles
All 11 Folding Nets of the Regular Octahedron
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