This site features step by step instructions on math procedures.
There are also math games and brain teasers.
Cool Math 4 Kids
Cool Math is the more advanced site for students who are starting
to work on Pre-Algebra concepts. It has step by step
instructions for students from Pre-Algebra through Calculus. It
also features a site called "Finance Freak" which explains
financial topics in an easy to understand method.
Cool Math
This site features instructional videos on every math topic from
basic multiplication facts to calculus. Use this source if you
need extra instruction on a topic.
Kahn Academy