Cool website of the day: Khan Academy
A free world-class education for anyone anywhere. The Khan Academy is an organization on a mission. We're a not-for-profit with the goal of changing education for the better by providing a free world-class education to anyone anywhere.
All of the site's resources are available to anyone. It doesn't matter if you are a student, teacher, home-schooler, principal, adult returning to the classroom after 20 years, or a friendly alien just trying to get a leg up in earthly biology. The Khan Academy's materials and resources are available to you completely free of charge.
Looks interesting. I should spend some of the time I usually waste on mindlessly browsing the internet in the Khan Academy instead. Link via Mad Minerva.