When the ENTIRE class is out of hand
I recently had a very rough experience while supplying in a grade 7 class. I've been teaching for a few years and have been lucky to get long term jobs that last through most of the year. But I usually spend about 2 months supplying during each year, either before or after my long term. I find that sometimes I get one of those classes where it seems like the entire room is acting up - not just a handful of students. When it's my own classroom, I can squash that behaviour through firm rules and consistent consequences; even if it's a rough group they learn in time that they can't get away with their behaviours, and they'll start to improve. However, I find it can be difficult as a supply for many resons. Especially with older students.
For example, this particular class was incredibly loud non-stop. Talking across the room to each other, wandering around, throwing things at each other, leaving the room without permission, talking back, etc. It literally never stopped. The room looked like a tornado hit by the end because of the disarray. It was a nightmare. I had nothing to really give as a consequence, because they don't have recess and there wasn't any gym or free time or anything like that to use. It was basically survival.
Does anyone have any tips of how to deal with WHOLE class issues, especially for someone who's only there for the day? I find when younger classes are busy, they respond to sternness. Older grades... not so much.