San Jose, California: Jesse Roe, a ninth-grade math teacher at a charter school here called Summit, has a peephole into the brains of each of his 38 students. He can see that a girl sitting against ...

From a tiny closet in Mountain View, Sal Khan is educating the globe for free. His 1,516 videotaped mini-lectures — on topics ranging from simple addition to vector calculus and Napoleonic campaigns — ...

(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 ...

All products featured here are independently selected by our editors and writers. If you buy something through links on our site, Mashable may earn an affiliate commission. Khan Academy's math lessons ...

The stellar Khan Academy offers free, well-structured online courses in a variety of subjects that you'll find in US schools, and serves as a reliable source for anyone with a hunger to learn. Where ...