Exploratorium: the museum of science, art and human perception
Free Resources for Science Teachers
Lesson Plan sites for K-12 Teachers
Resources for Science Teachers
Resources for Teaching Biology
Science and Math - FirstGov for Kids
Science Experiments For Kids - A to Z Home's Cool Homeschooling Science
Science Lesson Plans and Resources
Science Websites and Teacher Resources NSTA
Teacher Resources- Lesson Plans, Web Sites
The Science Club: hotlinks for science activities