Puzzles at vismath
Brainstring Advanced
Can you untangle this? The colorful strings of the Brainstring Advanced can be moved using the buttons on the outside. Move them from hole-to-hole to place either one, two, or three buttons of the same color on each surface. But be careful: Make sure there is no knot inside!
Mathematician's dice
This die is special: It contains six of the most beautiful and important symbols of mathematics. The six symbols are: Zero, One, e, i, Pi and Phi.
Ivan's Hinge
Manipulate the hinged pieces to create striking patterns: “Ivan's Hinge” consists of colorful pieces hinged together. Now try to fold, twist, and bend it to recreate specific patterns.
For Kids aged 8+
Film: Hard Problems
“Hard Problems” follows the six exceptional high school students who represented the United States in 2006 at the world's toughest math competition — the International Mathematical Olympiad IMO. Each year, the grueling and exhilarating contest pits the top teams from 90 countries against one another.