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For Kids
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Demonstrations 1 - 20 of 279
The Golden Rational Tetrahedra in Zome
New this month
Covering Maze with Tweaks
Kids' Cryptography with a Key from a Propositional Puzzle
Kids' Cryptography with a Key from a Frieze Pattern
Kids' Cryptography with a Key from a Wallpaper Group
Proposition Puzzle Cryptography
Kids' Cryptography Based on a Boolean Ring
Kids' Cryptography with Key from Leonardo Groups
Words along a Hamiltonian Path
Color Blindness
Time Around the World
Word Squares
School Subtraction
Fibonacci Rabbits
School Multiplication
School Addition
Addition and Subtraction on a Circular Ruler
Nets of Polyhedra
Equations with Fractions
Addition and Subtraction of One-Decimal Numbers Using Rulers
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