Nice and fair teacher, but don't expect to learn anything from him. I hadn't learned any calculus before this class which put me at a pretty big disadvantage considering that my TA was worthless and I never went to lecture. I scraped out a B thanks to CLAS, but I felt like I could have done much better with quality instruction.

Very easy class. The midterms and the final were very similar to the practice exams he posted on the website.

Class was fine. Professor handed out comprehensive practice tests and solutions. No reason to get less than an A if you put in even minimal effort. Freshmen tend to go to lecture and talk the entire time/not study, lower the curve for everyone else, then run to ratemyprofessors.com to cry.

This professor was not helpful one bit. I am so upset I stayed in this class, I should have dropped it once I knew he wouldn't teach me a single thing. Shouldn't be teaching.

Sounded more like he was trying to teach himself the material instead of the class. And he always avoided questions from students.

Good Jokes in class to keep us entertained.Nice Guy as well. However, midterms and final was extremely harder than the homework and practice tests. Does not explain very well and assigns homework far too easy. Do not recommend him for any Lower division math courses unless you are a math genius

This class was extremely difficult. Homework is very limited and does not give enough practice for the students to grasp the concepts at hand. The midterms and finals were all very hard. Dai is a smart man but is too smart for the class.

Prof. Dai is a really good teacher. He explains things really well. I get everything unlike someone I know... Ohohohohohohoho~ Ohohohohohoho~ Ohohohohohohohoho~

Great guy, terrible teacher. Constantly blows past steps w/o explanation. Puts random stuff on the homework that was not touched in class. Really nice guy, just not a great teacher, too smart to teach this low level of a class, he assumes everyone shares his math brain.

Wants you to do good in the course. Very helpful. Good examples. Explains things clearly. Homework can be difficult but his tests aren't too bad. He listens to students comments. Math 102B is easier than 102A.

Stable, professional class. 240b was a little easier than 240a after some adaptation to specifics of geometry.

This course was really hard for me and Dai didn't help. His tests were harder than the homework and his lectures were unclear but the subject matter was difficult so i don't blame him for everything.

Small class, professional invironment. Lectures are rather introductory and supplementary for a lot of reading and exersizing (what is good for me). The course is extremely difficult unless you are fluent in algebra, analysis, and topology.

Hard class. Good prof. He tries to explain things well and wants to give you an A. He jokes are a little random but appreciated. Office hours are helpful if you don't understand homework. He wants you to learn it and he wants you to do well, so he tries hard and it helps.

funny teacher...he's a great lecturer and has a really odd sense of humor. He made me laugh pretty often and understands the need to ligten up when it comes to math.

goes around in circles and doesnt know what to do sometimes...then just gives a joke to keep everyone in the class and get a decent eval

good

great professor, very funny with his jokes. the class was not very hard

great teacher! he explains everything clearly. final was kinda tough, though. still, way better than gerstein. take math with dai if you get the chance. story time rules!

Joke Time Rocks

The prof is def. the best i've ever had. If he can explain calculus to me, he can basically teach it to a monkey. I actually enjoyed an hour and a half of math! Wait, did i just say that? Anyway, i am passing with a B, and i totally failed last quart

He's an awesome teacher! I love his little jokes, they are so cute, and it actually makes the hour and fifteen minutes of calculus enjoyable!

professor dai actually goes through and explains examples so that everybody can understand them. he makes calculus easy. his funny jokes make the lectures more interesting. take his class if you get the chance.

Pretty good at explaining stuff. Makes some funny and random jokes. Tests are reasonable as is the curve. I would definitely recommend him