fun games like Bloxorcz (spatial thinking): http://coolmath-games.com
great for practicing measuring and reinforcing fractions: http://www.rickyspears.com/rulergame
good tutorials for decimals, multiples, percents: www.mathgoodies.com
mostly easier games for younger students. The Cyberchase games are fun! The Crack Hacker's Safe deals with finding
and continuing patterns.
www.bskids.org
Set Game - This is so much fun that you will want to play it over and over!:
http://www.setgame.com/set/puzzle_frame.htm
Ken Ken Puzzles: http://www.kenken.com/playnow.html
practice +,-,/,x facts.
Another great puzzle to think about logic as well as
Challenge problems: http://www.moems.org/sample_files/SampleE.pdf
Everyday Math Interactive Student Reference Book
http://isrb.everydaymathonline.com/index_2.html
https://www.everydaymathonline.com/
Resources for summer review work:
http://mail.frsd.k12.nj.us/owa/redir.aspx?C=a887db6c39ef42f58f74972dcfa7976f&URL=http%3a%2f%2fwww.aleks.com
http://www.summerskills.com/