The idea is this: you can create and print your own QR codes, containing any information you’d like, for FREE at www.qrstuff.com. Then, you can post them in certain areas or give them to students. Students use their phone to take a picture of the code and the FREE software to decode it. Maybe the QR code contains a URL that you want them to visit. Maybe it contains a question you’d like them to answer. Whatever it is, it’s sure to engage students in the activity and motivate them to find their next QR code.