QR codes are a new and exciting way to get students attention and keep their focus. This is a printable pack that you can print out and cut into 8 cards. Each card has a addition or subtraction story problem on it, with a QR code to check the answer. I have used this in a 2nd grade classroom and printed them on card stock and spread them out around the room to get students up and out of seats or working with partners.
**To scan QR codes, all you need is a QR code reader/scanner. Many of these readers can be found online or in your app store.