There are circles in those rectangles – hence the second half of the name.

Today’s Gratitude Item: Being able to negotiate a room change with a colleague so that I get to use a classroom which has a smartboard. Our rooms were shuffled around at the start of the semester and the room I was assigned yesterday did not have a smartboard – which makes teaching for me difficult given that all of my resources are designed to be used in conjunction with one of these modern marvels. So being able to trade rooms was a huge relief.