An Online Math Dictionary It's Awesome! http://www.amathsdictionaryforkids.com/
Connected Math (CMP Grades 6-8) Web site for parents and students http://connectedmath.msu.edu/
Need practice with fractions? Look here! http://www.visualfractions.com/
Math Games! You get to pick the topic. http://www.gameclassroom.com/games/6/math
Math Games, plus more! Try a few to see what you think. Just remember to scroll down on the page and look on the right hand side. http://www2.scholastic.com/browse/learn.jsp