Khan Academy is a not-for-profit educational organization started by Salman Khan in 2008.
Khan Academy's mission is to provide a free, world-class education for anyone, anywhere. All resources are completely free forever, regardless of whether you're a student, teacher, home-schooled, principal, or adult returning to the classroom after 20 years.
Online materials cover subjects ranging from math and finance to history and art. With thousands of bite-sized videos, step-by-step problems and instant data, Khan Academy provides a rich and engaging learning experience. You can earn points and gadgets along the way, and coach others as well. Sign up and take the math pretest, then practice and level up your skills! Or choose from thousands of lessons to learn something new. Then on your profile, select your avatar and show off your badges.
Where Do I Begin? How Should I Get Started?
Start by taking a Tour of the Site
Select a topic from the "Learn" menu or do a search for a topic of your choosing! Or practice your skills using the Math Knowledge Map. Start at Addition1, or explore on your own.
Profiles: Log in to see your badges and track your learning progres
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