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To create QR codes, I use www.QRStuff.com, because it allows you to create them in color – perfect for color-coding by difficulty level or class period. Super easy to do and only takes about 15 seconds.
To scan QR codes, students need to have a web-enabled device with a camera, and then an QR scanning app for that device. Yes, Chrome Books can scan QR codes – it’s just a bit awkward because of the front facing camera.