Kids Health http://www.kidshealth.com/
Food Pyramid http://www.mypyramid.gov/kids/kids_game.html#
Additional links on nutrition http://www.bbc.co.uk/northernireland/schools/4_11/uptoyou/index.shtml
Test your tobacco and alcohol IQ. http://www.harcourtschool.com/activity/hstats/index.html