Here's a thoughtful critique of an instance of online education. Chunking existing lectures into video may be straightforward, but falls short of the impact Khan achieves with 10-minute-or-less snippets whose concepts the student must demonstrably master before proceeding. The chapter on attention in Medina's Brain Rules substantiates this point.

On the other hand, the notion that middle schoolers can learn - and profit from - Game Theory is intriguing. As an undergraduate, I took a course (6.802) entitled Problem Solving. It's a rare day that I don't apply something learned in that course; I wonder what might have happened had I been armed with its content at age 11.