Regents review http://www.regentsprep.org
geocache http://www.geocaching.com/about/
Great site for definitions and formulas. You will find everything that you could possibly need. http://www.mathwords.com/
map distances http://www.gmap-pedometer.com/
Flashcards http://www.aplusmath.com/Flashcards/index.html
practice math skills http://www.thatquiz.org/
review applications of algebra