I thought that everybody did this! But apparently, not. So this was my XKCD 10,000 moment this week. I happened to tweet the following -- and I think it's my popular tweet of all time. And as you can see, I was just at the end of class and tapped it out quickly... error included! The year is just starting and students aren't yet used to the expectations of responses when we do a Desmos activity, I've found I've had to prime the pump sometimes. I am logged into Desmos as the teacher and I project the Dashboard on the projector. I try to get to the dashboard as quickly as possible so that I can click Anonymize, which makes the students' login names those of famous mathematicians/scientists/engineers. (Suggestion to Desmos -- it would be nice to be able to enter an activity with Anonymous turned on.) This means students can make errors without making them publicly although invariably, some students will yell out their pseudonym. Then I use the PAUS...
...not something ready-made, but something in continuous formation through choice of action. J. Dewey