
I think it best to have a set of classroom norms and go through them every session at the beginning. This can be a quick or drawn-out review, as needed. They can also be posted on the wall and direct students to review them after they've signed in or updated their tracking sheets while the wait for others to catch up. You should get agreement from them that they are willing to follow the norms. For instance, if norm #2 is no cross-talk, and you have a student who is, you can simply ask them, "are you following norm #2?