Today I experienced two classes from a different perspective--sitting at a student desk to observe my colleagues' teaching--and I learned two really important things:
1. The reek of dry-erase markers reaches all the way to the back of the class, creating an annoyingly intoxicating environment.
2. The heating and cooling system in one classroom blows so loudly that I don't know how students in the back can hear the speaker.
I'm sure I learned other things too--after all, I was listening to some brilliant colleagues putting their best teaching skills on display--but I took special note of these two items because I wonder if they're true in my classes too. I teach in both of those rooms and I use dry-erase markers whenever necessary, and if the reek and the noise are annoying to me, they may be annoying to others as well.
I don't know what can be done about the loud fan except to speak up, but maybe we can do something about the dry-erase marker stink. Odorless markers, anyone? I don't mind if students get high on knowledge, but there's no need to send them to altered states via stinky markers.