I believe that students can learn without electronic devices. I'm a huge fan of clay, Play Dough, cardboard, math manipulatives, colored pencils and other non-techie things. I also have a one-to-one device to student ratio. And as much as I say that students should easily be able to share supplies, devices are made for the individual. I wouldn't want to share my teacher computer on a rotating schedule. We don't ask for students to share pencils, paper or textbooks. Why are we asking them to buddy-up with technology in the name of "collaboration?"