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: ...

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 ...

Courses are well-designed, and most if not all instructors seem genuinely engaged and concerned with the outcome of the learning process. Courses are organized thoughtfully, with content presented in ...