... I did make the mistake of trying to do two new super-interactive tasks during both sessions. It's like I don't know any better. ('But Loz', my inner demon voice said, 'you're so organised! You have everything you need to have!') Except, of course, students who listen. There was one point I was so frustrated, there was one of the girls looking at me all worried and disappointed in herself, and I properly said, "yes! yes you should be looking ashamed! because I was standing here telling you exactly what you needed to do and you didn't listen!" Way to go, Loz.
There is a reason people in this profession: a) regularly have vocal breakdowns, b) regularly have mental breakdowns.