When I was teaching, I used to always ask my colleagues of these days after the holidays: How was re-entry? There can be a lot of friction and static after a week plus off. Our students and we still groggy from over eating and under waking.
I would also take my students through a groan inducing stand-up routine. "Ok. It's been over a week since we were together, so let's review a bit." I would pick up a piece of chalk. "This is chalk. This is a blackboard. I am a teacher. You are students." Picking up a pen and notebook and in turn holding each one up. "Pen. Notebook. Everybody good?" Groan.
So...how was re-entry?