A great site to practice basic math skills, flash cards, games and much more. http://www.aplusmath.com
A general homework help site. http://www.discoveryschool.com
Practice problems for the State Test. http://www.stfx.ca/special/mathproblems/grade8.html
Great site to pracitce math skills, includes games http://www.aaamath.com
This is an awesome site that provides YouTube videos for tons of topics in math as well as other subjects. www.khanacademy.com