Recreations
- 22
- Mathematik
- Individual pages on different topics in Mathematics. Examples : group theory, dynamical systems theory, geometry or number theory.
- 23
- Mathematische Basteleien
- Topics include Flexagon, Soma Cube, Pentominos, Cube-it, Rubik's Cube, Froebel's Star, Tangram, House of Santa Claus, Chronogram, Numeric Palindromes, Latticework of Letters. English/German.
- 24
- Mathematrix
- Have fun with geometric shapes, fractals, math games, art, humor, quotes, and important constants.
- 26
- Maze Classification and Algorithms
- A short description of mazes and how to create them. Definition of different mazetypes and their algorithms.
- 27
- Mudd Math Fun Facts
- An archive of interesting math facts for use in the classroom or just for fun. Browse by subject, difficulty, keywords, or try the "random" feature. Based at Harvey Mudd College.
- 28
- Number Recreations by Shyam Sunder Gupta
- Features interesting facts about different numbers. Includes favorite related links.
- 29
- On the Puzzles with Polyhedra and Numbers
- This is an article on a set of didactical games edited by the Portuguese Mathematical Society (SPM). [PDF]
- 31
- Recreational Mathematics (David Eppstein)
- An extensive list of web resources for recreational math.
- 32
- Roman Numerals
- Includes a introduction to Roman numerals including a translation of the digits used and a converter which can convert decimal to Roman numerals and vice versa.
- 33
- Sir Roger Penrose
- An article about him and his interests and contributions to recreational mathematics.
- 34
- Skytopia - Super Magnet
- A colourful world built entirely using mathematical atoms and molecules. Pictures and animations demonstrate structures colliding and interacting. Animated GIF demonstrations.
- 35
- Stunning Friends with Math Magic
- A collection of card tricks, number guessing games, paper and glue magic, and other math exercises.
- 36
- Table of Numbers Problem
- Given a m * n rectangle, place all numbers from 1 to mn that minimizes the sum of the products of rows and columns (both in Spanish and English).
- 37
- The Diamond 16 Puzzle
- New version of the classic puzzle using row/column/quadrant permutations to display symmetries of graphic designs. Has link to a site on the underlying mathematics (Diamond Theory).