I don't remember the skills well.

I tried being aware of breath   
Turning the mind (turning my mind away from distressing thoughts and back to.my class)   
Distraction: texting and posting here. To keep my mind off. Also I have to concentrate to do this and listen to class, which takes energy away from the problem even if it's not good for looking like I'm participating in class.  
Participating. They say participate 100%, but I'm doing maybe 60%. I think asking a question helped bring me back the most. Was dissociated. 
At any rate after about 40 min I felt back to normal.
