"When I work with teachers who are using iPads in their classroom, I get them to audit their apps and to ask so what? questions of the apps. I need for them to know the learning and formative assessment potential of each of their apps. If the apps is unjustified busy work, it is scrapped. I then introduce this concept I have developed called layering, where the best features of one app are used to create content that can be enhanced in another app. I get the teachers to base the learning intention outputs around the workflow of several apps."
Via John Evans