Terrible professor. Does not provide anything useful for the class and has extremely hard exams. He also does not curve and expects everyone to know the material, so he rarely gives out partial credit.

If there is any professor to chose from other than Chai please take advantage and avoid Chai at all costs. He contributes nothing to the success of his students. He provides no practice review for tests, doesnt let anyone use a notecard, says he will provide all necessary equations but doesnt specify which ones. By far worst professor Ive had.

I recognize that teachers catch a lot of undue flack, and that people love to blame teachers for their shortcomings, but god damn. I genuinely don't understand how Chai holds his job. This course could have been offered online with no instructor whatsoever and it would have been just as effective. Chai contributes *nothing* of value to this course.

Wow Chai is so unbelievably bad. I do not think I learned a single thing from him eventhough I attend every lecture and stay attentive. He really is not able to get the point across and instead just gives a bunch of definition and works out VERY simply problems VERY quickly which is an ineffective way to teach. Avoid him at all costs.

Unfair grading. One of the lowest class averages I've seen at UCSB, yet he doesn't even curve the class. You're lucky if you just manage to pass the class.

So I've had him for two math classes so far and he's actually a great teacher! People blame his accent/teaching style for not doing well in his class instead of themselves for not learning the material well enough. Yes, his courses are challenging and tests are hard, but it's doable. Chai cares about his students and wants them to succeed.

As a vistiing professor coming from China, it's natural that he has some accent when speaking English. But if you taking his class, he teaches based on the textbook, only 5 questions of each homework ( please make sure you understand completley and know how to slove it as most questions of midterm and final comes from HW.

Chai was difficult to understand at first due to his accent. However, you will get used to it within a week or two and if you sit in the front row, he is much easier to hear. Homework is tough but necessary, and if you can complete the homework with a solid understanding of what you are doing, you will easily pass the tests. Read the book too!!!

Very thick accent, my first prof who I could not understand because of it. Lots of homework, which I liked. Tests are much more difficult than the homework. If you are a master of the subject, you might be able to finish the tests in time. My first math class I didn't get an A in, even though the material isn't that difficult.

Tests are a nightmare, almost impossible to finish within the time limit. No note cards and doesn't curve. Rarely responds to emails -- instead regularly sends out emails to the class saying he's busy and can't respond to everyone. Speaks very softly with a strong accent and students frequently ask him to turn up the mic. Make sure you get the HW.

Had him for Math 4B. He didn't curve tests although the averages were quite low. He has a strong accent, speaks quietly, and rarely does actual examples that usefully exemplify the concept. You could take the final online; however, many people likely used online calculators to cheat (whereas I did not) and so there was no curve for the final/class.

So I took him in Math 4B-differential equations. The homework was fine throughout the year, assigning about 1 set per week with about 10 problems each. He thinks the test is easy because he takes the problems from the homework, but he chooses the absolute hardest ones off the homework. Also did not curve even though the midterm averages were 55%

WORST professor ever. Couldn't understand his accent at all. Tests were like nightmares. Extremely disgusting calculations.

The worst professor I have ever met in UCSB. Avoid him!!! The homework is far more difficult than the lecture stuff and the test is far more difficult than the homework. He can hardly explain the stuff clearly.

I was doing pretty solid in this class... until I began not going. Even when he starts posting his notes I recommend you go to the lectures. He goes over material in lectures that will be covered on his tests! The final was tough but he has a pretty big curve for the class grade.

Don't take him for 6A. Lectures aren't clear and the tests are VERY deep concept based. Very challenging exams. His accent isn't too bad though. He's a nice guy, but I do feel like he set us up for failure

By far the worst accent I've had to listen to from a professor. Class is only good in the sense that final can count for 80% of grade if you don't do well on midterm. Allowed a notecard on final, just copy the practice final onto it and you'll be good. One of the worst professors I've had to learn from, but he is always willing to help if you ask.

His lectures are difficult to follow if you don't stay on top of this class. I highly recommend doing your best to stay current with the material and study and learn to do the homework as you go. If you don't, you will get behind and be overwhelmed quickly. The tests are very similar to the homework. Office hours are helpful, as is Khan Academy.

A bit hard to understand, doesn't round or curve grades at the end. Very willing to help, though. Lots of homework, but make sure you actually understand it because most test questions come from homework.

Prof is a very understanding guy in terms of grades. Original grading: 20% hw, 30% midterm & 50% final. After the midterm, he gave the option of dropping the midterm's weight and raising the final's weight to 80% if it gives you a higher final grade. Hw is tough, but make sure to understand them because the tests are based off of hw.

He's a little hard to understand at first but after a while you will get used to his accent. He posts lectures online and gives fair time for homework. At the end of the quarter he opened up all the homework for credit which was helpful for grades. Overall very good professor.

I couldn't understand anything he said in class really. This is the single worst professor I've ever had. I had to teach myself everything via google. His teaching style is awful, he explains things in the worst way possible. If you get stuck with this guy, drop it or he will ruin your love for math. And the hws are so so so hard.

Very easy class! He is a little hard to understand but he puts all his notes online so you don't actually have to go to lecture and his notes are detailed with examples. His tests are very easy, all the problems come from the homework. If you know how to do all the homework problems you will do well!

I was always interested in math but I had a lot of trouble staying awake during this class. You will have to work hard to understand the homework, but even then, the tests will be difficult.