Math Manipulative Games

Addition Magic Square
http://sakharov.net/puzzle/digit.html?SRC=sakharov
Change Maker
http://www.funbrain.com/cashreg/index.htm
Create Your Own Graph
http://illuminations.nctm.org/ActivityDetail.aspx?ID=60
Isometric Drawings
http://illuminations.nctm.org/LessonDetail.aspx?ID=L611
National library of virtual Manipulatives
http://nlvm.usu.edu/en/nav/vlibrary.html
Polyhedrons
http://www.korthalsaltes.com/index.html
Slide Game Number Sorter
http://superkids.com/aweb/tools/logic/sorter/index.shtml
Tangram Game
http://pbskids.org/cyberchase/games/area/tangram.html
Tessellation Activities
http://www.coolmath4kids.com/tesspag1.html
Non-verbal virtual activities
Color memory concentration
http://www.coolmath-games.com/concentration/index.html
Chicken, Fox, and Grain
http://www.kidspsych.org/farm.html
Connect Four
http://www.coolmath-games.com/connect4/index.html
Lights Out
http://www.coolmath-games.com/lightsout/index.html
Match the Faces
http://www.kidspsych.org/rotate.html
Occhina in Space (color memory)
http://www.kidspsych.org/space.html
Occhina the Archologist (symbol memory)
http://www.kidspsych.org/pyramid.html
Pentaminos
http://www.enchantedmind.com/puzzles/pentamino/pentamino.html
Rush Hour
http://www.gamequarium.com/rush.html
Same Game
http://www.coolmath-games.com/samegame/index.html
Similar
http://www.coolmath-games.com/similar/index.html
Escape-a slide game
http://johnrausch.com/SlidingBlockPuzzles/escape.htm
Tower of Hanoi
http://www.coolmath-games.com/towerofhanoi/index.html
Vex
http://www.coolmath-games.com/vex/index.html
Build a Square
http://www.apples4theteacher.com/square.html