I was at the hockey arena on the weekend with my boys for their skating lessons and as they were doing their thing I couldn't help but wonder what my students would say if I asked them how they would measure the perimeter of the skating rink using non standard units. We are talking about perimeter right now so it seemed like a great opportunity for me to try this out without too much stress. The video is "raw" and impromptu so please don't be too harsh in your judgement. I fumble a couple of times and even use the word 'area' as I am trying to set it up for my students. My wife (who is also an elementary school teacher) commented on the 'flaws' of the video but I am sticking to the idea that it is an authentic video and that this whole process would not be so effective if things were planned and polished. Here is the video:
The students had a lot of fun with this! They enjoyed watching me talk to them about the math and they loved seeing all the items in the video that they could use to measure the perimeter of the ice rink.