The worst teacher you've ever had? What did he/she do?

Jason Smith is a math teacher at the University I go to. He teaches the Calc II class that is specifically for math majors. He hates it when students ask what they did wrong on previous assignments/tests and will interrupt, yell, and threaten students who do so. I told my department chair about this and things got better for a week and then back to the same-old crazy. In general, he hates teaching. He doesn't like students, explaining math, or doing math. He never had clear answers for how to do anything in class unless we were asking about a different math class's homework. The only time I remember him actually finish answering a question in class was when a student asked a discrete math question in the calc class. The online book we used had the answers available so we could check to be sure that we got the right answer. Even if you showed how you got the right answer, he would usually mark it as wrong. When we asked why it was wrong, he would rant at us for being disrespectful. That is the WORST teacher I've ever had.

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