Marc Prensky's presentation hit the nail on the head. Today's students are not engaged during instruction and it isn't because they don't want to learn, they just learn differently. They act put-out with their sighs of dread when its time to start a lesson, but a new lesson with a device in their hands changes the atmosphere completely. Its said for years that it's time for teachers to go digital and/or a new generation of teachers, Digital Natives, that will know how to engage our students through the use of technology in the classroom.
Just a little side note--
Recently students have been given more freedom using their tablets or cellphones and even though I am not using them for lessons yet, they don't seem as bothered by my teaching….haha. The students put their devices away when they know its time to get busy.