Play

http://www.youtube.com/playlist?list=PLDC7ED8982C6F5CB0

eMathematics

http://www.emathematics.net/

Fact Cafe

http://www.mathfactcafe.com/

Cool Math / Games

http://www.coolmath.com/
http://www.coolmath-games.com/

BBC

http://www.bbc.co.uk/schools/numbertime/

Nick's Mathematical Puzzles

http://www.qbyte.org/puzzles/

Worksheets / Directory

http://www.mathblaster.com/teachers/math-worksheets
http://www.tlsbooks.com/mathworksheets.htm
http://www.superkids.com/aweb/tools/math/

http://www.abcteach.com/directory/basics/math/

Numbers Games

http://www.thekidzpage.com/learninggames/math/index.html

100 interesting math puzzles

http://www.aimsedu.org/puzzle/index.html

Activities / Types / Theme

http://www.education.com/activity/math/
http://activitytypes.wmwikis.net/Mathematics
http://www.kidzone.ws/math/index.htm

Activities and Games / Early

http://www.mathgamesandactivities.com/
http://www.edu.gov.mb.ca/k12/cur/math/games/index.html

Games

http://www.factmonster.com/math/knowledgebox/

Complete Math and Thinking Games Directory

http://www.dmoz.org/Games/Puzzles/

Quizes

http://www.quizmoz.com/quizzes/Maths-Quizzes.asp
http://www.quibblo.com/search?q=maths

Interactive Math / Websites and Resources / Games / Activities

http://www.intmath.com/
http://interactivemaths.net/

http://www.theteachersguide.com/InteractiveSitesMathSmartBoard.htm
http://jc-schools.net/tutorials/interact-math.htm

http://www.woodlands-junior.kent.sch.uk/maths/
http://www.shodor.org/interactivate/activities/

Games and Logic Puzzles

http://akidsheart.com
http://www.logic-puzzles.org/

Puzzle

http://www.mathpuzzle.com/
http://www.galileo.org/math/puzzles.html
http://thinks.com/webguide/math-puzzles.htm

Expert Village

http://www.youtube.com/user/expertvillage/videos?query=Math+Games&flow=grid&view=1

Education Games

http://www.ehow.com/math-education-games/

Interactive Mathematics Miscellany and Puzzles

http://www.cut-the-knot.org/

Puzzle and Game / About

http://en.wikipedia.org/wiki/Mathematical_puzzle

http://en.wikipedia.org/wiki/Mathematical_game
http://puzzles.about.com/od/mathpuzzles/Math_Puzzles_and_Games.htm