These are good entrepreneurs and programmers, and they are using great tools, but I don't think they are qualified to say they are redefining teaching basic Com

These are good entrepreneurs and programmers, and they are using great tools, but I don't think they are qualified to say they are redefining teaching basic Computer Science. Interactive platforms and approaches have been constantly introduced by CS educators to teach introductory programming. Educators are very aware of the value of interactivity and reactivity in teaching and learning. The only new thing here is the utility of cool new tools equipped with latest web-based technologies. Further, their approach is limited to programming, which is a large part but not the only approach to Introductory Computer Science. For example, they can't touch approaches such at MIT or Rice (I think), among others, which employ cool physical robots to teach coding, thinking, programming and robotics. So this is not so much redefining, but rather a little enhancing CS education with cool tools.