This activity is great to reenforce skills. I put the task cards up around my room, have the students fill out a recording sheet, and self-assess themselves by using the QR Code buddy app.
My kids LOVE this activity. I love it too, because I get to spend more time working with students then grading papers.
If you are looking to a recording sheet, I have uploaded it as "Proper Noun QR Code Recording Sheet." It is free. :)