[IanCal]

Not actually related to the android app, but I was a bit confused as to what this would be other than just a video player. I hadn't seen the Khan Academy since it was a collection of maths videos. Wow. I've been playing with the coding tutorials, and it's incredible. My wife has been learning with codeacademy but the tutorials there are oddly restrictive in what they allow, and have a bunch of problems with code that should (but doesn't) or code that doesn't (but should) work.

Listening to someone explain their code, being able to pause it and modify the code and see the changes immediately (and helpful error messages if you bork it) then hitting play and having it go back to a sensible state is incredible.