How do you approach your professor if you do not understand or know how to do the homework at all? So, I am an undergraduate student taking partial differential equations. This class can be so stressful at times because I do not understand the lecture material, and thus it makes it hard to do homework. Moreover, we have a quiz every Friday based on the homework, and homework is due on Friday. 

So far, we are going over 1D wave equations and I do not understand any of the lecture material at all. Moreover, If I do not understand the lecture material I can't do the homework that is due on Friday. Other students in that class are lost too. It just doesn't make sense that this course is required for undergraduate level in order to graduate. 

What do I tell my professor in his office hours if I do not understand the homework at all? I am nervous because I do not know how he will react, and I did not put any solution down because I am clueless. How would you react if you were a professor and I went on Wednesdays to your office hours and homework and quiz is due on Friday?
To address the part of the question &quot;what do I tell the Professor&quot; to help with the problem &quot;I do not understand the lecture material&quot;:

Clear your head
Start reading your notes, word by word
As soon as you get confused (even a little bit), stop reading. On a piece of paper, write down what you are confused about, and why.
If you can, skip over the confusing part and continue with step 2. If you have hit a brick wall and can't understand anything that follows, stop.

Take your piece of paper to the office hour and work through it with the Professor. This will give you both a better idea of precisely what you are confused about, and how to resolve it.
Hopefully, when confusion about the lecture material is resolved, the homework will start to make sense.