I'm a Geometry teacher who doesn't know how to measure anything.
Okay, I can measure stuff. But, like most of the world except the nation I now live in, I learned* to measure everything in metric. Mostly. I grew up on a farm, so I'm very used to measuring area in acres and rainfall in points and inches. But aside from that, I just know metric.
So this poster set is for me, more than the kids, if I'm perfectly honest. Or it is for them, when Mr. Carter is silly enough to give them all their measurements in millimeters.
* I also had to fix this word after typing "learnt" just now. It's going to take a while to break some of these habits.