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- Math Cats
Math Cats promotes creative, open-ended explorations of math concepts through online and offline activities such as Tessellation Town, Polygon Playground, What a Crowd, Exploding Math Art, math crafts, story problems, hexagon-shaped fact family cards, idea banks for teachers and parents, and much more.
http://www.mathcats.com
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Martin's Pretty Polyhedra
What happens if numbers of similarly electrically charged, weightless particles are placed inside a glass sphere and come to equilibrium? This page shows the polyhedra resulting from a simulation of the system. Little more than the inverse square law is required. Some are familiar (tetrahedron, octahedron), many are not but still interesting.
http://www.wmeadow.demon.co.uk/poly/index.htm
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Bruce Bukiet's Homepage
description of Prof. Bukiet's work including math modeling of baseball and math tricks.
m.njit.edu/~bukiet
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MathPro Online: Online Reference to Mathematical Problems
database currently contains 20,945 math problems from 38 journals and 21 contests
http://problems.math.umr.edu/index.htm
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Flexagons
Includes a definition of the word, instructions on how to make a Trihexaflexagon, how to flex it and information about it and another flexagon.
http://www.mathematische-basteleien.de/flexagons.htm
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Tiling and Packing Results of Torsten Sillke
Polyominoes, polycubes and polyspheres.
http://www.mathematik.uni-bielefeld.de/~sillke/results.html
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Mathematics Archives
links to contests, problem sets, journals sites.
http://archives.math.utk.edu/contests
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Franklin's Magic Squares
Covers how Franklin constructed his magic squares including a autobiographical extract.
http://mathpages.com/home/kmath155.htm
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Java Penrose Tiler
A Java applet for experimenting with kites and darts.
http://www.geocities.com/SiliconValley/Pines/1684/Penrose.ht...
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