Recreations

Home of Simon Singh: author, journalist and TV producer, specialising in science and mathematics. Cryptography is one of his specialties, and his site has a lot of educational and fun content about codes and codebreaking.

Features interesting facts about different numbers. Includes favorite related links.

Includes puzzles, jokes, quotations, poetry, and FAQs.

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.

Individual pages on different topics in Mathematics. Examples : group theory, dynamical systems theory, geometry or number theory.

Include news, math tricks, methods, facts, trivia, mostly posted by users.