Current location: Math > Recreations > Games and Puzzles
21. Perfect Times
Teaches and assesses fluency of multiplication and division tables using online cards. Submit data and compare results.
http://www.perfect-times.co.uk/ - 06-08-2001
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[detailed information]
Rating: [6.00] Votes: [1901]
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22. Polyhedra Links
Pastime and activity links for various geometric patterns, polygons and polyhedra by Jill Britton.
http://www.camosun.bc.ca/~jbritton/jbpolyhedra.htm - 30-06-2002
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[detailed information]
Rating: [6.00] Votes: [1988]
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24. Pythabacus
Description and instruction of using the ancient Pythagorean Abacus to do arithmetic.
http://www.pythabacus.com/ - 27-06-2001
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[detailed information]
Rating: [6.00] Votes: [230]
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25. Quia! Mathematics Activities
Educational activities for teaching mathematics including concentration, matching, flash cards, word search puzzles, and Java games.
http://www.quia.com/dir/math/ - 24-05-2002
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[detailed information]
Rating: [6.00] Votes: [1812]
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26. Riddles
A collection of riddles and logic puzzles with solutions.
http://www.julienstern.org/riddle.php3 - 08-02-2004
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[detailed information]
Rating: [6.00] Votes: [1347]
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27. Scott Kim
Puzzles for web, computers, and print; ambigrams.
http://www.scottkim.com/ - 12-09-2003
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[detailed information]
Rating: [6.00] Votes: [613]
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28. The Contest Center
Classic puzzles and riddles requiring only simple logic and elementary math.
http://www.contestcen.com/classic.htm - 27-06-2002
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[detailed information]
Rating: [6.00] Votes: [71]
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30. The Null Set
Puzzles collected by Guy Kindler, most requiring some undergraduate mathematical knowledge. Some hints are provided.
http://www.princeton.edu/~mathclub/puzzles.html - 03-02-2003
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[detailed information]
Rating: [6.00] Votes: [480]
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