I am just starting to record my dreams again after many years (45?) of not recording them.

In the dream I am at a university and I am supposed to be teaching a math class. I know I am not a math teacher so I am a little nervous about it. The students, all young adults are gathering and looking to me to decide where we will be having class. We try a couple of rooms but they are not suitable for a variety of reasons. There is construction going on and some rooms are incomplete. Finally we settle in a kind of hallway. There is big blackboard and a student goes up to it and starts writing equations - very fast! I don’t know anything about what he is writing. Another student goes to the board and writes equations as if in response to the first. I am in way over my head. Finally the students realize I am not a math teacher and start to leave. Some of them are kind of smirking. I don’t feel quite as uncomfortable as I think I normally would - or should.