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Problem
Solving
Websites
http://www.mathsnet.net/trail/index.html
http://mathschallenge.net/
http://www.figurethis.org/challenges/toc.htm
http://tlfe.org.uk/numeracy/#mathschallenge
http://www.cut-the-knot.org/games.shtml
http://www.stfx.ca/special/mathproblems/welcome.html
http://www.mathplayground.com/logicgames.html
http://myweb.tiscali.co.uk/thelogiczone/
http://www.puzzles.com/Projects/PacksAndCollections.htm
http://krazydad.com/sudoku/
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