Very good teacher who makes things easy and is helpful. Howver, not necessarily assertive as far as bad behavior of some students which was a distraction in his class.
Mr Matsumoto was the funniest math teacher I had. He did seem to go off in his own world at times but he still was an awesome teacher and made everything simple to understand.
Okay, I took his class a long time ago, but I always thought he was cool and easy to understand.