Often times, hitting, pushing, throwing things, ect. happens behind my back or when I don't see it and the students come up to me and expect me to do something about it. My question is: How do you handle situations in which you didn't actually see them??? I usually tell the students, if I didn't hear it, I can't do anything about it. But for the bigger things such as hitting and pushing, how do you handle that? Should you punish another students for hitting if you didnt' actually see it?