It's tough to deal with cell phones in the classroom. This book proposes that a teacher embrace them, which is interesting because I'm going in the opposite direction and moving to a cell phone holder. I think the book's argument that teachers can't ignore tech and need to teach digital literacy (how to research a paper effectively online, using resources and evaluating credibility). I think some of the exercises with phones would work in a class of 15-20, but are more difficult to implement with 30-40 students.