AAA Math
I love this site for extra help when working on a difficult concept. It gives a tutorial followed by practice problems and then a game! It has concepts that extend to middle school grades.
A+ Math
This site is a wealth of practice sheets for math skills! If your child forgets his/her homework, you can print out a sheet on the same concept and they will get credit for having done some homework!!! There are also on-line flashcards for practicing those times tables!!!!
