Fun Math Websites
A webcomic of romance, sarcasm, math, and language: http://xkcd.com/
Check out this site (math doodles and more): http://www.youtube.com/user/Vihart
Zoo of Numbers--shows what's special and interesting about each number from 13 - 23!
(Check links on left for more fun, interesting stuff)
http://www.archimedes-lab.org/numbers/Num13_23.html
Great Patterns to learn math: http://www.youtube.com/user/MisterNumbers