QR codes are so fun to use in the classroom. I used this as a literacy center last year for rhyming. I will give one bit of advice though...(especially if you are teaching young ones), I recommend them using a finger or something while scanning to make sure they have scanned the one they intended to. Since these codes are all in a row, it can be tricky. For our centers last year, I covered the ones we weren't using with a sheet of scrap paper.--That worked out really well.