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a TERRIBLE teacher, but he is fair on exams & grades, better than many others

trust me, dotn believe the other comments. the man is evil, he will fail you!!!!

he is the worst teacher. His lectures arent clear, and he is hard to understand.

Worst math prof I've had in my 4 years at UD. Completely incoherent, disorganized, unprepared for lectures. Only saving quality is that he is an extremely easy grader.

So simpuh. My children are six and can do partial derivitaves! Such a terrible professor. You can hardly understand the guy and when he moves onto chapter 17, the chapter that is impossible to do on your own, you are screwed. Good luck if youve got him.

HORRIBLE!!! AVOID!!!! He may be an easy grader, but it is NOT worth the pain! MAkes at least 20 mistakes a class, and is unclear and unhelpful, and the most frustrating professor at UD. DO NOT TAKE

Zhang is a horrible teacher. He comes into class daily with no lesson plan at all. He just comes in with a sheet of problems and spends the class period trying to do the problems by "using his mind." He makes multiple mistakes everyday to the point where I stopped taking notes. His exams take much longer than 50 minutes.

I agree with comment from 5/6/09. Couldn't say it any better. Looking past the FEW things I actually learned from this professor, I would rather have taken the honors section because I wouldn't have had to basically teach myself the course. Also, INSANE amount of hw. 30-40 probs per assignment, more than 10 sets for the semester = 400+ problems!!!!

It is impossib;e to understand his accent so classes are pretty useless. He gives a lot of homework but will delay the due date if asked. His tests are much easier than the homework and only a few questions. The homework grade does affect the overall grade so do the best you can.

Only take this teacher if you have the time and motivation to teach yourself the entire course. His tests will be exactly like the study guides but good luck learning how to do all of it on your own. Not only is he difficult to understand in class, but he has no ability to teach or explain or answer questions.

Horrible Horrible Horrible teacher.. When I say horrible, I mean the worst professor you will ever have. However, he's also the easiest grader I have ever come across. Gives a study guide prior to the exams, and switches up the numbers. I had no idea what was going on but somehow managed to get a B with minimum effort

He doesn't explain anything, gives you 8+hours worth of homework per week, he laughs at the class, makes TONS of mistakes, and skips steps when doing examples. AVOID IF POSSIBLE.

Laughs constantly when making mistakes. Very thick accent and cannot understand. Skips steps in problems. He doesn't have a set key to grade exams. He just takes off as many points as he feels. Also he tries to make his course's average look sufficient by doing this and some people who deserved higher or lower grades are averaged out to a B-, B.

He is very hard to understand, condescending, and has a million questions per homework assignment (which are assigned every week). But he gives out study guides that basically tell you what the exam is going to be on which is the only reason I got a B

Worst professor I've ever had. Can't understand him and class isn't worth going to, except for the fact that you're graded on it. Avoid avoid avoid.

Professor Zhang is one of the worst professors I have ever taken. His lectures meander and are incoherent. He assigns weekly homeworks that take about 20 pages each. Would not recommend

Zhang's lectures are useless. He makes tons of mistakes in his examples and half the time you cant understand what he's saying. He gives 3 WebAssign homeworks a week each averaging 10-20 questions, plus written homework. When emailing him for help, he replies with "I did an example in class" and provides no further help. You'll be teaching yourself

Teaching is not this guy's forte. He often acknowledges that he's a "bad professor" in class. Zhang doesn't send coherent emails or solve problems thoroughly for the class. Zhang distributes grades via weirdly-coded emails instead of Canvas. Way too much homework was assigned. Take MATH243 with a different professor. At least the exams were easy.

Worst professor I've had. His zoom format was terrible, I suspect he'd be a better lecturer in person. His homework was way too much, 6 hours twice a week. Getting an A with him is super easy, but proceed with caution.

Worst professor I've had. His zoom format was terrible, I suspect he'd be a better lecturer in person. Lecture was simply going over what would be on homework, not application based at all! His homework was way too much, 6 hours twice a week. Getting an A with him is super easy, but proceed with caution.

Really nothing good to say about this guy. He's a difficult grader, terrible lecturer and expects you to know all of the content perfectly with the toughness of his grading. Homework every single class, quizzes every single class, you basically have to teach yourself all of the material because of how terrible of a lecturer this guy is. Avoid.

dont waste your damn time, take this god damn warning and do not take this class unless you absolutely need to.

AVOID!!!! This class gave me a mental breakdown and is way to hard! 31 HWs, 26 quizzes, and 5 Exams. Prepare for 12+ hours of hw a week. His lectures SUCK and I can't understand what he is saying. You teach yourself EVERYTHING and need to be an ELITE math reader. This class makes the 500 & 600-level courses I've taken look like a joke. AVOID ZHANG

You will pay for this course with your mental health, not with your tuition.

God he's so bad. Makes me question the hiring process at UD. Nobody pays attention to his lectures but you have to go because he grades attendance and theres a quiz. every. class. His exams are hard but everybody cheats. Only gave him a 2 cuz he drops a bunch of grades

AVOID. He assigns a homework and a lab after every lecture. Attendance is mandatory and he gives a quiz every class. He drops a fair amount of grades but he doesn't use canvas at all. No one pays attention during lectures because his are useless. If you don't have to take this class avoid it or hope there's another professor.

I'm going to put this bluntly, this guy should not be teaching. This is a matlab based class and we do everything by hand. Everyone looks at each other in shock when he fails to explain certain things or incorrectly adds fractions. It is a disgrace that I am paying for this class.

UD will really hire anyone, huh?

If you need to do math426, wait until he isn't teaching it. He needs to go through training on how to conduct a class because he has no idea how to lecture. Especially if you need to do math428, you won't get proper understanding of math426 to do that next class if you take it with him.

There were 34 homeworks, 34 quizzes, 6 exams, 5 MATLAB projects, and 24 labs. Lectures are hilariously bad because he'll write something on the board and say there's nothing to teach. Like one kid pays attention, and he corrects him on to do basic math. He'll randomly say 'attention', but nobody understands. HOW IS SHANGYOU ZHANG A PROFESSOR AT UD?

He is impossible to understand. So much homework, so many quizzes, and his lectures are just him reading/copying off of his own PDFs that he posts online that you will end up having to teach yourself from later. Exams aren't actually bad but he doesn't give enough time. So. much. homework. And so many quizzes. This class took up all of my time.

I am a senior, and this is by far the most challenging class I've ever taken. Class meets 3x/week, and there is homework due as well as a quiz every class. Lectures are often difficult to understand, and lecture notes are frequently filled with errors. He takes off large chunks of points for little mistakes and doesn't give enough time on exams.