Salman Khan started KHANACADEMY.
Salman graduated from Massachusetts Institute of Technology with a Bachelor of Science in Mathematics, a Bachelor of Science in Electrical Engineering and Computer Science and a Master of Science in Electrical Engineering and Computer Science.
He also has a Master in Business Administration from Harvard.
With the support of his wife he quit his day-job to post free YouTube videos to teach basic math and like they say, "The rest is history."
We have compressed some lesson videos below and put them on a loop, so that the repetition will help you to speed-learn the lessons.
Writing Algebraic Expressions 1:
Writing Algebraic Expressions 2: