Maybe you have seen some of the strange-looking images like the one at the right. These are QR Codes that first became popular in Japan a few years back and thanks to the earthquake and tsunami we learned about the in the US. If you are already familiar with them and have a scanner, go ahead and scan that one – don’t worry it is just going to some information about me. Most businesses have recognized the power of marketing using these neat little barcodes and have even designed codes that resemble their logos. This post will give you some resources and examples about using QR Codes in the classroom.