Angry Quote: "So when I tell you to stop talking... that means stop whistling and stop acting like an idiot!"
Is His Anger Justified?
The teacher says, "You're in grade 10, act like you're in grade 10," which is pretty bad advice since that's exactly what these kids are doing. It seems like the teacher is legitimately disappointed with his class' behavior, but shouldn't he be used to this by now? No offense doctor, but you don't look like you just started teaching last week. Learn to be more authoritative and maybe these kids will respect you.
What do we mean by more authoritative? Well, for instance, when you notice you're being recorded, take away the phone and erase the clip. Don't wave "hello" like a 12-year-old kid walking through the background of a local news standup. Now over 100,000 people, including every student you will ever teach for the rest of your life, has seen you act like a total pussy just because you got stage fright when someone pointed a camera at you.
Mr. Hand's Angrometer: