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 ...

SPENCER MICHELS: Khan lives in California's Silicon Valley with his wife, a rheumatologist in training at Stanford, and their new baby. He got the idea for Khan Academy four years ago, when he taught ...

Corrected: An earlier version of this story incorrectly stated the number of registered users of the Khan Academy. It is 137 million users. A bevy of technology and software tools are taking center ...

Khan Academy is expanding its highest-level math content through a new partnership with a prestigious New England boarding school. The plans, announced this week, involve Khan—a popular producer of ...

"This," says Matthew Carpenter, "is my favorite exercise." I peer over his shoulder at his laptop screen to see the math problem the fifth grader is pondering. It's an inverse trigonometric function: ...