This week my students wrote their own multiplication properties' question. Once their question was proofed, they typed it into a QR code. (www.qrstuff.com) The kids e-mailed the QR code to me and I printed it off. Since the question was hidden in the QR code, the kids used a QR scanner on each iPad, to see the question and answer it.
We got math, writing, and technology into one short lesson! :) The kids loved using the iPads to practice the questions!
If I was to do this again, the students would put the ANSWER into the QR code and hand write the question on the top of the paper. THEN, they could solve the problem and CHECK the answer!