puzzle websites

1. Algebra Puzzle
http://www.mathplayground.com/Algebra_Puzzle.html
Great logic puzzle. Master the 3 x 3 square first before moving on to the 3 x 4 one.
2. Pentominoes
http://enchantedmind.com/puzzles/pentamino/pentamino.html
Excellent puzzle for spatial relations. Don’t get frustrated. You can put the puzzles that don’t fit back and try again.
3. Classic Peg Puzzle
http://nlvm.usu.edu/en/nav/frames_asid_182_g_3_t_1.html
Make sure you master it with 2 pegs, then work up to 4, then 6, then 8!
4. Sudoku
http://www.fiendishsudoku.com/sudoku.html
Even the easy version is quite challenging. Give it a try though.
5. 15 puzzle
http://www.javaonthebrain.com/java/puzz15/
Put the numbers in order from 1-15. Take your time. Keep trying until you get it!
6. Gem puzzle
http://www.coolmath-games.com/0-gemswap/index.html
Switch the gems to get three of a kind in a row in order to eliminate them. You’ll need to practice a lot in order to beat the clock!
7. Breaking bricks
http://www.coolmath-games.com/0-bricksbreaking/index.html
Don’t know if there’s much skill involved, but it’s definitely fun. Click on groups of bricks of the same color to make them disappear.
8. Knight’s Tour
http://enchantedmind.com/puzzles/knights/knight.html
Following the move of a knight on a chessboard, try and cover all the spaces on the board.