Mathematics
Counting: http://home.earthlink.net/~cmalumphy/countinggame.html
http://www.harcourtschool.com/activity/mmath/mmath_cars.html
http://www.primarygames.com/math/countthecubes/index.htm
http://www.kidport.com/GradeK/Math/NumberSense/MathK_HowMany.htm
Patterns: http://www.crickweb.co.uk/assets/resources/flash.php?&file=colour-sequence
http://www.harcourtschool.com/activity/pattern/pattern.html
http://www.apples4theteacher.com/math/games/100-number-chart-one.html#interactive100chart
Geometry: http://www.primarygames.com/math/shapeinlay/index.htm
http://www.learningplanet.com/act/rats/rats1.htm?rats_shapes
http://www.primarygames.com/puzzles/match_up/shape_match/shape_match.htm
Sorting: http://www.meddybemps.com/deepblue/sortingfish.html
http://www.scholastic.com/clifford/play/sortitout/sortitout.htm
Adding: http://www.kidport.com/GradeK/Math/NumberSense/MathK_BasicAdd.htm
http://www.kidport.com/GradeK/Math/NumberSense/MathK_Addition.htm
http://www.bbc.co.uk/schools/numbertime/games/snakes.shtml
http://www.primarygames.com/add_up/start.htm
Subtraction: http://www.kidport.com/GradeK/Math/NumberSense/MathK_Subtraction.htm
Measurement: http://www.kidport.com/GradeK/Math/MeasureGeo/MathK_Tall.htm
http://www.kidport.com/GradeK/Math/MeasureGeo/MathK_Long.htm
http://www.funbrain.com/measure/index.html
Number Sequence: http://www.kidport.com/GradeK/Math/NumberSense/MathK_Sequence.htm
Odds and Even: http://www.crickweb.co.uk/assets/resources/flash.php?&file=npmenu
Money: http://www.mhschool.com/math/2003/student/activity/courses/grk/ch11a/
http://www.primarygames.com/Spending%20Spree/start.htm
http://www.coe.uh.edu/archive/math/math_lessons/mathles3/tutor.htm