I recently learned about the Khan Academy from my husband who is an 8th grade science teacher at a private school in Seattle. As part of the teachers' ongoing education, he attended a workshop where he heard Salman Khan, founder of Khan Academy, speak.
Starting the Khan Academy
Khan began tutoring his nieces and nephews in 2004. Since he was in a different city than they were, he talked them through the problems while using Yahoo!'s Doodle notepad to show them what he meant.
He was excellent at explaining math concepts and soon he had more students than he could easily handle given his full time job as a hedge fund analyst.
A friend suggested that he capture what he was teaching in Youtube videos. This was the beginning of what is now a library of over 2,600 videos available free at the Khan Academy.
(read the rest of the article at Priceless Parenting)
