LiveBinders is a web 2.0 tool which provides the ability to save and organize materials for your science or math class. The great thing about this free tool is that you can update the resources instantly to ensure your lessons include the latest ideas, tips, and resources in science and math.
This About Binders page comprises links to a 90 sec. intro. video, a page with additional explanation (Learn More), and exemplars (View Great Binders).