Check out the on line activities from your textbook. Math Textbook
Practice for the NJ ASK in May Study Island
Practice your math facts AAA Math
Play some cool games while learning Cool Math for Kids
http://www.math.com/students/puzzles/puzzleapps.html
Check out the awesome puzzles and manipulatives (tangrams etc) National Library of Virtual Manipulatives
Test your knowledge while playing a game Math Playground