For this activity students will need an ipad, tablet, smart phone or other device with a QR code application downloaded. You can find many free QR code apps in the app store for your device.
With this activity students will walk around the room in search of clocks that match a given time. For this activity I use the terms "quarter to", "quarter past" and "half past". My students love these activities! I use them as a center choice during math time.
I am going to continue to work on creating QR code scavenger hunts aimed at second grade standards. Check back often!