1. History of Math - This is a very interesting site from the UK.
3. www.cut-the-knot.org - miscellaneous math games and puzzles
4. S.O.S. Math - good resource for math help
5. Trigonometry Realms - interesting trig animations
6. Zona Land - Math and Science stuff
7. Math Placement Guidelines at Iowa State - in case you're interested.
8. University of Iowa - math expectations
9. UNI Math Department - I couldn't find any practice tests.
11. Protozone - Art stuff
12. Fun Statistics Links
13. 7 Stones
14. Conic Sections - animations