From youtube, to informational sites, to places were you can play games and learn. You do need to pick through them a bit as some folks aren't as good at doing research as others, but you have that with written books as well. :) I thought I'd point your way to a few sites, and perhaps in return you'll point me to some that I may not have yet discovered. :)
There's Science Jim. Where folks are encouarged to wonder about things.
When we studied the human body we used some of the experiments fromNeuroscience for kids to help solidify some of our learning.
Digital Bits Science Lab has a number of easy to challenging science experiments.
The Why Files. I find this site fascinating. It's not a site for young children, geared toward teenagers/adults. But it gives facts behind the news that might intrigue or explain things a bit more.
NatureWorks. Learn about North American nature. Discover the natural world and the connections that make nature work in this 16-part series for students in grades 3-6. Student host Patrice Forrester and Senior Naturalist Dave Erler of the Squam Lakes Natural Science Center, explore the ways living things interact with the environment.
MiddleSchool Chemistry helps you explore the world of molecules and atoms.
BBC science. Various activities divided up into age groups.
Shephard Software has ananimal classification game.
Wart Games has a variety of activities for children to do.
Check out this flight simulator game.
Wanna build a rocket? Learn how to here.
Anyways, that's just a short list, I've lots more that can be found on my science pages (see the left hand sidebar). Let me know if you have some that I don't have eh? :)
Nicole @ Journey to Excellence ~ Missouri
Dusty @ To the Moon and Back ~ Babywearing
Kristi @ The Potter's Hand Academy ~ Spring Studies
Jennifer @ Royal Little Lambs ~ Essential Oils
Jen @ Happy Little Homemaker ~ Frugal Fitness
Meg @ Adventures with Jude ~ Homeschooling from the Kitchen
Lori @ At Home: where life happens ~ Favorite Books
Tauna @ Proverbial Homemaker ~ A Christ-Centered Home
Please CLICK HERE for the whole list! :)