Teachers never switch off! It’s just our nature, whenever we’re walking around (or doing pretty much anything) we always have our job at the back of our minds. Quite a few years ago I started using QR codes, a Japanese technology which was invented for tracking automobile parts during the manufaturing process. The original purpose was quite dull, but in the hands of teachers they can have a much more enjoyable role. This week the students were allowed to run (well, walk quickly) around the school on a treasure hunt. Not that there was any treasure at the end of this particular hunt, just the satisfaction of completing a revision exercise on our previous Math concepts. A number of QR codes were placed around the school with a selection of questions covering the topics we’ve covered this year. The answer to each question was a clue to the location of the next question. The students carried their Math books with them so they could refer back to jog their memories. The students all had fun (with a little frustration added in) and learned, at least remembered, what they’d forgotten they’d done before!