This site contains many links to science information, activities and units of study. Try a few out.

If you are a middle or high school science teacher, take a look at the Jason project. It is free and has excellent resources for weather, plants and energy. Check out the Jason Project overview video at this link:  http://www.jason.org/public/Get/InvolvedStarted.aspx and get started on an exciting adventure. Scroll down and click on "Watch a Demo Now!"