Education

SIAM: Moody's Math Challenge

URL: 
http://m3challenge.siam.org/
An impressive US competition for high-school students featuring real-world large scale problems. (e.g. Tell us how to fix the Social Security deficit)

Risk-Ed - Risk

URL: 
http://www.risk-ed.org/pages/risk_frameset.htm
Interactive risk education site sponsored by the Institute of Materials, so concentrates on environmental exposures

Glasgow Science Centre

URL: 
http://www.gsc.org.uk/bangornobanghome.aspx
Background to roadshow material on probability, including nice animation of Monty Hall, and with explanations labelled for educational level.

Mathagony Aunt

URL: 
http://www.mathagonyaunt.co.uk/mathFrameset.html
statistical education tools using ESP cards as game

Planet Science | Sci-Teach

URL: 
http://www.planet-science.com/sciteach/index.html?page=/sciteach/hatsoff/act_ris...
Package of materials for teaching pregnancy risk and spread of sexually-transmitted diseases (although they make a serious and mistake in their probability theory: the final 99% chance quoted is the chance of getting chlaymdia OR getting pregnant, not AND - this is very poor for an educational resource).