General
Educational resource listing from US Gov websites
Science
NASA.gov website with resources for educators. Search for classroom materials by keyword, grade level, and subject.
Health
USDA Food Pyramid site - Interactive food pyramid selector, games, and food explorer
The site provides reliable information on diseases and conditions from over 1,600 government and non-profit organizations.
US Gov website on cancer. Lots of research info.
CDC gov website. Includes info on Diseases & conditions, healthy living, emergency response, environmental issues, and updates as to the current health condition of the US and world.