I am by ni means sold on QR codes and consider them to be at best an interim technology (by contrast, I think augmented reality (see below) is here to stay). But many people are interested in the idea, and some think it can be useful in a classroom. This post divides into three parts: first, to help you get ready to use QR Codes; second, to help you teach students; and third, seven ways QR codes are being used in the classroom today. "I think we should just take cell phones out and have them on our desk at all times," writes Vicki Davis. "When it is time for the test, they put their cell phones in a box on the teacher's desk and get them back afterwards. Let's harness the elephant in the room instead of pretending he isn't there."