California Academy of Sciences
California Academy of Sciences: Natural History Museum
California Academy of Sciences is the oldest scientific institution in the West. This great site describes the museum and shows pictures of various exhibits.
Other
National Aquarium in Baltimore
In addition to a variety of pre-visit and post-visit lessons for classroom teachers, the aquarium also provides (at a reasonable fee) classroom visits to enhance student understanding of marine life.
University of California
University of California Museum of Paleontology: Understanding Evolution
This resource presents extensive information for learning about and teaching evolution including an in depth course "Evolution 101", teaching materials, and a resource library.
Trinity College Dublin
Trinity College: Rene Descartes (1596 1650)
Events of Rene Descartes' life are presented in a timeline form. The biographical information is taken from "A Short Account of the History of Mathematics" by W. W. Rouse Ball (4th Edition, 1908).
Other
New Mexico: Earthquake Education and Resources
This site from the New Mexico Bureau of Mines & Mineral Resources is a helpful online resource for the science classroom. Learn what an earthquake is, how it is measured, how we prepare for one. Also, locate additional links and...
Other
I Naturalist
Community-sharing site lets all the world's sharp-eyed naturalists, including school-age students, record their observations of the outdoor world.
PBS
Pbs Kids: Dinosaur Train
Preschoolers get to hop on board the `Dinosaur Train' to learn about natural science, natural history and palaeontology.