QR Codes are a quick and easy way for students to access information. Watch this video of 4th grade students at Welcome Elementary as they use QR codes for math and behavior incentives. QR Code Video
Here is a handout about how to create QR Codes while you are using Mozilla Firefox. QR Code Generator for FireFox
You can also create QR Codes for text, phone numbers, urls, facebook, etc.. using the website. www.qrcode.kaywa.com
Click more on the page and it will give you the option to add text. The 4th graders wrote their math problems, typed the answers in the text box and created a QR Code for their answers. Students from their class and other classes could scan the QR codes when they walked down the hall past their bulletin board to see the correct answer to the word problems.
Here is a fantastic resource for you to learn more about how to use QR Codes by Kathy Schrock.