Hippocampus
Resources for biology, physics (physical science), and environmental science

Home Work Hot Spot
Find your science topic part way down on the page.

Khan Academy
Scroll down for video help with biology, chemistry, and physics.

Science Frameworks
The Frameworks breaks down the state standards in easy to understand vignettes and helpful parent tabs.

Science Homework Help - Free Science Videos - Brightstorm
Videos of teachers explaining topics in biology, chemistry and physics.

The Science Page
Links to resources in all main science areas, plus newsgroups, and science analogies.

Thinkfinity
Information and activities based on MN standards. On the right side of the page under "Keyword Search" click on "State Standards Search".