We had a hard time getting the second session going. When Gimme thinks she's done something wrong, then she really has a hard time focusing for a bit. I've learned to do some tricks or something so she can be right and then get back to what we were doing, but I sometimes forget (especially in agility class).
Here are some training clips from the last class I did before surgery. It wasn't the last class, just the last one I handled. Gimme was really unfocused here - probably because I was hurting and in the back of my mind, worried about the surgery. I wanted to show how quickly she picks things up. She understood how to do the turn after two tries and only one successful and rewarded.
She's a very quick study. If she had a better trainer, she'd be a genius by now. Actually she is a genius - it should read, she be more accomplished by now.