Remember the Android App Inventor project by Google? No? Well, it went dark and died last year, but since then, it has been used to show new users how to create apps simply on Android. In fact, it is now used in classes Wellesley College and the University of San Francisco, among other learning institutions.
What MIT is doing for the App Inventor is simple: it has been turned into an open-source application, with documentation and contributions to the code being made available in the future, but for now there’s a standard repository. Updates on this project will be posted on MIT’s App Inventor blog.
Sounds like a good start.