Interesting things to make out of paper—from mathematical models to toys.
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Turn a Pentagon into a Square
Tie a hexagon
Dodecahedral Move Form
Fold Three Pentagons from a Strip of Paper
Fold Heptagons from a Strip of Paper
Fold an Equilateral Triangle of a Given Height
Cut Out a Cross with One Straight Cut
Orderly Tangles
Hinge from Miter to Gnomon
Fold a Star of David into a Smaller Star of David
Turn an Equilateral Triangle into a Square II
Fold a Pentagon from a Circle
Wunderlich's Jumping Octahedron
Spherical Model - Cube
12-Celled Collapsoid
Turn Two Cubes into a Rhombic Dodecahedron I
Turn Two Cubes into a Rhombic Dodecahedron II
Sine and Cosine Finder
Fold a Strip of Paper into Approximate n-ths
Fold the Graph of a Cubic Equation
Fraction Dials
Cardioid and Nephroid String Art
Fold a Latin Cross into Four Polyhedra
Five Intersecting Tetrahedra
Butterfly Ball Dual
Peaucellier Linkage
Hart's Straight-Line Linkage
Watt's Parallel Linkage
Chebyshev Linkage
Tangrams
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