General
From AHS Student Resources
Exploratorium ExploraNet
http://www.exploratorium.edu/
"The Exploratorium is a museum of science, art, and human perception with over 650 interactive "hands on" exhibits."
Frank Potter's Science Gems http://www.sciencegems.com/ These resources are sorted by category, subcategory, and grade level. Chosen as one of the Top Ten education resources sites by Lycos!
Science2Discover http://www.science2discover.com/ A Children's Guide to Science and Biotechnology.
Science Learning Network http://www.sln.org/ Explore resources, visit museums, connect with schools and educators, and more on this website funded by Unisys and the National Science Foundation.
SciWeb http://www.sdcoe.k12.ca.us/iss/sciweb Rates best 100 science sites and provides links to many other science resources.
SCORE Science Home Page http://scorescience.humboldt.k12.ca.us/Maintained by Humboldt County Office of Education with a goal of providing California K-12 students and teachers with easy access to quality on-line science resources. Includes Ask a Scientist, Science Search, and more.
Smithsonian Institute http://www.si.edu/ America's Treasure House for Learning.
Virtual Field Trips Site http://www.field-guides.com/ On-line Field Trips include Hurricanes, Deserts, Natural Wonders, Sharks, Marshes & Volcanoes. Includes a Teacher's Lounge with curriculum resources (you may also propose your own virtual field trip/tour there).
Paleobiology http://www.smithsonianeducation.org/students/index.html Dinosaurs, Paleo Art, Geologic Time, Fossils, Underground Forests. Provided by Smithsonian National Museum of Natural History