Quiet speaker and criticizes students that ask questions. No office hours. He is knowledgeable but does not explain crucial steps in the concepts hes teaching. Im a math major, but he made me hate the subject for a brief period. The exams have the most difficult versions of the problems on it and you dont have enough time to finish the midterm.

Long is definitely not the worst math professor you could have, but certainly no where near the best. The thing with Long is he is such a brilliant man that he assumes all of his students know everything that he does, and consistently skips crucial steps and explanations. He would end class early basically every day, good luck with Darren.

Hes a super nice guy, but not the greatest lecturer. His exam problems mostly come from lectures and the homework, although he seems to pick the most difficult ones. By far not the worst professor, but there may be better ones.

Long D is not the best professor when it comes to learning everything you need to know in class. He is pretty hard to hear since he speaks so quietly and he isn't exactly eager to answer a lot of the questions we have to ask him during class. His jokes aren't bad tbh but he kinda stops them a few weeks into the quarter.

Professor Long is a very condescending man who doesn't care to answer questions he doesn't deem worthy. He doesn't wear a mic in a class of 150 students and his accent makes it even harder to hear him if you don't sit close enough to the front. Sections are mandatory and lectures aren't, but the midterms/final are based on in-class work.

He is a tough grader, and he does not seem to like teaching. His office hours are not useful, but he is an amazing lecturer. I believe that in this class I actually learned how to think like a mathematician, which is still helping me now. His grading scheme for each problem is this: "perfectly right", "right but lacks clarity", "wrong (no credit)".

Prof. Long is really good at teaching math, very knowledgable, especially felt this after taking a relatively small class MATH 117. But his homeworks are hard, and his final exam is beyond expectations. He is a hard grader. Doesn't use Gauchospace tracking your grade, and the final grade would be confusing. Can't find him after the end of the class

His sections are mandatory which is really annoying since I found them to be unhelpful. His lectures are dry, he often skims over material that is important later on in higher levels of math. One decent thing though was that he stopped class every lecture to tell a joke.

Prof. Long is the best math professor I've had at UCSB. His class was appropriately challenging, and the homework was a perfect preparation for the midterm and final. His lectures were entertaining and engaging. I want to have him again for upper div courses.

I loved math until this class came along. His accent made it difficult for me to understand, and he assumes that students know everything as he's writing on the overhead

An excellent professor and a sweet guy. He really cares about the students and what you learn. You don't need to read the book that much, unless it is to clarify something in lecture, though these are pretty clear. He is very passionate about this material! If you go to his office hours and talk to him he can clarify anything.

Hands down the worst professor I have ever had to try to learn from. I went in expecting to learn calculus and he just assumed we already knew it. He did not respond to emails whatsoever and was rude during office hours. Unhelpful and overall a terrible professor. I would never willingly take his class.

Excellent professor. Attend lecture and take good notes, do the homework and you will be fine. Very clear and writes great transparencies, which he posts on the web. OVerall couldn't be better.

It took me a few classes to become used to the professor's lecturing style, but then I quickly fell in love with the material. Some of the homework isn't easy, but his exams are fair. He really wants you to think and learn from the homework. If you put in the time, you will learn a ton from this class.

The class was a pretty easy class. Homework was complicated though but do-able. There is always help. The TA's are very helpful. He is a FUNNY professor. Always tells jokes during lecture. I loved his class!

I have mixed feelings about this professor. The class was difficult up from for me as he expected us to know a decent bit of calculus. But he got better later on. Wildly entertaining with his jokes. I initially hated math but left loving it because Darren focuses on teaching applications, which make the subject incredibly interesting!

Not a very hard class, but I think that way because CLAS was extremely helpful! I would rather have attended only CLAS than the actual lecture, where I did not learn much. The final was pretty hard. Sometimes Prof. Long puts problems that he did not talk about on his tests, but most problems are from homework.

Professor Long is hands down the most funny professor I have ever had. Great personality which was the only reason I attended lecture. All the problems on his tests he does in lectures beforehand. Easy class if you try. It is worth taking an 8 AM just to have Prof Long!

He has a great European accent; explains the calculus very clearly but deems it "lowbrow math" and expects you to have mastered precalc concepts and equations. Class was an overview of concepts we needed to know to do homework on a basic level, and all the lectures were online. However, tests were VERY difficult, especially the final.

Great teacher, although you need to pay attention. Posts lectures online, answers all questions well, there a practice sheet for midterms. Final exam was totally straighforward.

In the beginning this class seems promising, very entertaining with his daily jokes, however have knowledge of calc before you take the class because he assumes everyone knows. The CLAS was very helpful, Attend the midterm reviews and you'll do fine but the final was what we learned in class but much much harder and he doesn't curve

Horrible Teacher. Even if you do well in the class you aren't guaranteed any grade. He doesn't teach you anything in class and the tests are stupidly hard. The only part of his class worth anything are his jokes.

GREAT professor! Awesome. He made lecture enjoyable. I definetely recommend taking calculus with him. Tests fairly.

Darren is a wonderful teacher. Clear, knowledgeable and enthusiastic. I hope I get to take another class from him in the future.