Here are some great math learning activities

http://www.abcya.com/rounding_numbers.htm

http://www.fun4thebrain.com/multiplication/kaigasmult.html

 

Fractions 

http://www.sheppardsoftware.com/mathgames/earlymath/fractions_shoot.htm

Math links

http://www.fun4thebrain.com/mult.html

http://www.internet4classrooms.com/skills-3rd-mathbuilders.htm

 

 addition

 http://www.internet4classrooms.com/skill_builders/addition_review_math_third_3rd_grade.htm

 subtraction

http://www.internet4classrooms.com/skill_builders/subtraction_review_math_third_3rd_grade.htm

place value

http://www.internet4classrooms.com/skill_builders/place_value_math_third_3rd_grade.htm

rounding and estimation

http://www.internet4classrooms.com/skill_builders/rounding_estimating_math_third_3rd_grade.htm

multiplication

http://www.internet4classrooms.com/skill_builders/multiplication_math_third_3rd_grade.htm

money

 http://www.internet4classrooms.com/skill_builders/money_transactions_math_third_3rd_grade.htm

 telling time

http://www.internet4classrooms.com/skill_builders/telling_time_math_third_3rd_grade.htm

 patterns

http://www.internet4classrooms.com/skill_builders/patterns_math_third_3rd_grade.htm

logic

http://www.mathplayground.com/

division

http://oswego.org/ocsd-web/games/mathmagician/mathsdiv.html

are you a math magician?

http://resources.oswego.org/games/mathmagician/maths1.html

that's a math fact 

http://www.harcourtschool.com/activity/thats_a_fact/english_K_3.html

more math games

http://resources.oswego.org/games/