I am taking a course in thermodynamics for my physics undergrad. The professor does not explain concepts, he only derives equations during the lecture and introduces words without defining them. He does not assign homework and now we have an exam this week. If I read the textbook (which is his lecture notes), I am able to follow the math and see what is happening step by step, but I don't really understand anything. We never solved a problem in class. This is my first upper level physics course and I'm kind of scared. Is this what to expect from now on? Next semester I will take mathematical physics and QM.