There is a special issue of nature with a lot of interesting stuff on digital learning. I myself always hesitate when people start talking revolution, still the good thing is that they both bring the believers (Khan) and the less optimistic (Ravitch).
From massive open online courses (MOOCs) that are delivered to tens of thousands around the globe to adaptive digital tools that can improve outcomes by providing tailored learning experiences as well as mapping a student’s individual progress at every juncture, technology is transforming the 21st century student. Through feature articles and commentaries from experts in the field, this special collaboration between the editors of Scientific American and Nature probes the revolution underway in education and what it means for learning and research.