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 for anyone anywhere.
Our library of videos (over 3,800 to date) covers K-12 math, science topics such as biology,chemistry, and physics, and even reaches into the humanities with playlists on finance and history. Each video is a digestible chunk, approximately 10 minutes long, and especially purposed for viewing on the computer.
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 inearthly biology. The Khan Academy's materials and resources are available to you completely free of charge.
March 2 Success
March 2 Success provides free educational materials to help students prepare for college with SAT/ACT practice tests and a series of videos to simplify the admissions and financialaid process. It also provides customized lesson plans designed to help students prepare themselves, or for educators to use to help students in areas of need. The lesson plans will allow students to skip through what they already know and focus on areas where they need assistance.