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[Discover] Brain Binders | folded paper puzzlers from Teachnet.com http://www.teachnet.com/brainbinders/ (puzzles)
[Discover] Tangram Construction http://mathforum.org/trscavo/tangrams/construct.html (puzzles)
[Discover] digista Lab. http://www.nhk.or.jp/digista/blog/works/20070517_fujiki/index.html (videogames puzzle ai escher)
[Discover] juegosdeingenio.org http://juegosdeingenio.org/ (math blog puzzle diariosdiario)
[Discover] Puzzle-Shop http://www.puzzle-shop.de/index.html (cube toys rubics form)
[Discover] Sam Loyd's Cyclopedia of Puzzles http://www.mathpuzzle.com/loyd/ (toread illustration images games)
[Discover] Interlocking Puzzles including Burr Puzzles, Altekruse Puzzles, Cage Puzzles http://www.gamesandpuzzles.co.uk/interlockframe.htm (cube form puzzle geometry)
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