Math Help/Practice:
Ixl for 7th Grade: http://www.ixl.com/math/grade-7
Ixl for 8th Grade: http://www.ixl.com/math/grade-8
AAAmath.com: http://www.aaamath.com/
Math.com: http://www.math.com/
Online Math Learning: http://www.onlinemathlearning.com/
Fact Monster: http://www.factmonster.com/
Math Goodies: http://www.mathgoodies.com/
Math is Fun: http://www.mathisfun.com/
Math Games:
Math Playground (games, videos, etc.): http://www.mathplayground.com/
Cool Math 4 Kids: http://coolmath4kids.com/
Funbrain for 7th grade: http://www.funbrain.com/FBSearch.php?Grade=7
Funbrain for 8th grade: http://www.funbrain.com/FBSearch.php?Grade=8
Math Games: http://themathgames.com/
A Plus Math: http://www.aplusmath.com/
Fact Monster: http://www.factmonster.com/
Math Play: http://www.math-play.com/index.html
Math Play Middle School Games: http://www.math-play.com/Middle-School-Math-Games.html
Math Play Algebra Games: http://www.math-play.com/Algebra-Math-Games.html
XP Math: http://www.xpmath.com/
Online Math Learning: http://www.onlinemathlearning.com/
Math Goodies: http://www.mathgoodies.com/
Flashcards: http://quizlet.com/