A friend just sent me some more good websites to check out:
This has lots of great stuff in it: I am often amazed at the quality of some things you can find on the internet. Check out Cells R Us for an online book on cells for elementary kids... or The Natural History Museum in London's page for kids where I found out What Kind of Dinosaur I am, or something I'm sure you all will want to try at home (ask your mommy first): Strawberry Pop-Tart Blowtorches.
The Exploratorium: the museum on science, art and human perception.
Fun links like a Visit to an organic Egg Farm or something Z will appreciate soon yucky.com
Hope your day is going good :-)