Check out the following educational sites. You might find some excellent ideas for learning and sharing:

http://www.arcademicskillbuilders.com/

http://www.free-training-tutorial.com/times-tables-games.html

http://www.eyepleezers.com/grade3.htm

http://www.eduplace.com/kids/sv/books/content/wordsort/

http://www.kidsnumbers.com

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

http://www.mathsisfun.com/timestable.html

http://www.multiplication.com/interactive_games.htm

http://www.factmonster.com

http://www.nationalgeographic.com/ngkids/

http://www.timeforkids.com/TFK

http://www.funbrain.com

http://www.multiplication.com

http://www.learningplanet.com

http://www.funschool.com

http://www.worldbookonline.com

http://www.akidsheart.com/holidays/christms/bellschrstms.html

http://www.dltk-holidays.com/winter/games.htm

http://www.mathsisfun.com/

http://www.honorpoint.com/

http://www.mrmyers.org/Math_Mania/ttmult.html?answer35=30

http://www.playkidsgames.com/

http://www.shodor.org/interactivate/activities/FractionFinder/

http://www.gamequarium.com/fractions.html

http://www.learningbox.com/fractions/index.html

http://classroom.jc-schools.net/basic/math-fract.html

http://www.mathplayground.com/thinkingblocks.html

http://www.multiplication.com/games/all-games