This article got me to wondering, Are my classes better because of my powerpoints or am I just trading lecture notes for some savy tech tricks? I think it is to rethink classroom interactions! If we do not engage students though active conversations then we are not helping them to truly understand the topic.  http://www.slate.com/articles/life/education/2014/03/powerpoint_in_higher_education_is_ruining_teaching.html