Education foundation offers a math puzzle of the month. Science and math activites can be downloaded. A site loaded with facts, figures, images, science stories and experiments. A comprehensive resource about space exploration in celebration of Space Day. Features include online postcards, cool space trivia and games, links and educational resources for teachers and students.
Multimedia resources too.
This seems to be a comprehensive list of Web resources in biology. The Heart Do, see, learn, and hear about the heart. The ZooNet Image Archive provides links to zoos, zoo galleries, and an extensive alphabetical list of animal images. The NetVet Electronic Animal Information Archive provides information about animals by clicking on icons. Easy to use and very attractive.