My PreCalc class runs itself now. I project the set puzzle of the day and they start sharing the sets they find with their neighbor without prompting. A student asks if class can be easy since he had a rough morning and I barely look up before another student responds for me (with an accurate impersonation). Someone asks if they had homework and a few students reply. Someone asks a question before the quiz and then answers it herself. I was necessary for the part of class where I explained limit notation, but then they completed the practice independently. June is awesome.