Edit: I meant "first two year physics courses vs first two year math courses" in the title. I know each school is different as far as how professors teach, but for those of you who are in your 3rd/4th year and beyond as a Physics major, how would you compare the material? I'm not asking if Upper Division courses are more difficult, but do they resemble something more similar to Freshman E&M where it seemed like there was more math (Vector Calculus) than concepts, or more like Mechanics where it was a tad the opposite? Maybe something like the third course in Physics (Waves-Thermodynamics-Relativity-QM) where it was "balanced?" Would you say you had to remember quite a lot of the concepts and peoblwm solving strategies you learned in your first 3 Physics courses? I'm starting to feel a little anxious and would greatly appreciate any advice.