Students love QR codes because are fun, they get to use technology, and they can check their own work!
This pack has 20 cards and aligns to second grade common core standard:
2.L.1f Produce, expand, and rearrange complete simple and compound sentences
You will need a device that can scan QR codes (iPad, smart phone, etc.). You can use the cards without it, but the students will not be able to check their work.