Over the past decade, the free instructional website Khan Academy has transformed how tens of millions of students across the globe perceive and approach math. Now, it’s pursuing a bigger aim: ...

(CBS News) Sal Khan is a math, science, and history teacher to millions of students, yet none have ever seen his face. Khan is the voice and brains behind Khan Academy, a free online tutoring site ...

Since debuting short videos to tutor his young cousins on YouTube in 2005, Sal Khan has been lauded as a Most Creative Person in Business, acclaimed by Bill Gates from the stage at TED, and received ...