He's the man. If he yells at you it's your fault. If he ignores your hand, it's because he has confidence that you know the material, and is waiting for the others to get it too.
No one can forget him. It was hilarious to see all the chalk he had on himself at the end of class.
You don't realize how great of a teacher he really is until you leave 9th grade but cares about his students. If he yells at you, you probably deserved it.
When you're in his class you can get frustrated, but once you're gone you realize what a good job he did