Bad professor
My Magnetic Fields professor spends nearly half our classtime taking roll, telling us a story about how we need to study and how we absolutely must spend 5 hours minimum, sometimes less, but most likely more, on each class every week. He then proceeded to lecture us on how people actually bought acres on the moon because they thought some advertisement about being able to buy land on the moon was real. He then proceeded to compare our feeble minds with this article. Like a third year engineering student would actually consider purchasing property on the moon, yikes. Anyway he spends at least half the class time telling us how we should be studying hard and learning. He then spends about 20 minutes scribbling seemingly random blather on the board about vector algebra and vector calculus, and about the last 5 minutes of class he'll start an example problem. Everyone with blank faces watches then and a few realize how he completely blew the problem from the beginning, and just as the class bell ends he tells us to finish the problem for homework. Is this normal?
Attack the problem where it is.
Second of all at least you're getting taught something, unlike four forty-minute periods a week where our teacher is twenty minutes late, like I have.
PS. I still haven't finished my degree after 14 years