He is the greatest professor of all time and I wish I could take his class every quarter. The F was not his fault but mine, if I professed my feelings for him earlier I could've probably gotten a high D instead.

I would say this exam was a hard and unreasonable exam. Furthermore, it was an invalid exam as the mass turning the test in started searching up answers and cheating with their friends.

I saw people cheating during the final exam. They were using their phones to search for answers and discussing the questions with their friends, and it seemed like there was no one invigilating the exam, so no one stopped them. I studied hard for this subject, and this feels very unfair to me.

Where do I even begin. The course was not enjoyable and the professor made it even worse. The final was not made in order to show who understood the concepts but rather to spend 3 hours row reducing. Also, chances of there being a curve were diminished when students were unsupervised and searching answers. The class expectations are unreasonable.

The professor gave alright lectures, the midterms are not horrible, and the homework is definitely great. The issue is with the 60% final he gives. It was absolutely horrendous. His class is alright, but take it with someone else if you can. Otherwise buckle down for a tough final.

His mid terms are way to easy to bait u in then give u impossible math to do on the final

Math 4A is a definitely not for the faint of heart. This math course introduces concepts that are much more abstract than simply plug and chug. That being said, I believe that if you attend your office hours regularly, and dedicate a portion of your day to reviewing the materials you are destined to succeed. Claire is an amazing TA!

He is genuinely one of the worst professors I have ever had. He mumbled and stuttered his way through class, and he barely spoke English. I don't understand how the school let him teach an 800-person lecture. I think he should consider a different profession than teaching and pursue something else, because what he's doing is not working. HE SUCKS.

Lectures were hard to understand, he mostly just shows the theorems/formal definitions. Basically had to self-teach myself everything. Final was 60% of the grade so if you get small things off the final your whole grade is gone. Homework was really hard in comparison to lecture material, took hours. Some funny memes in slides though. Take CLAS.

Couldn't understand anything he said during lectures and they were halfway empty two weeks into the quarter. Had a goated TA Nicholas who explained concepts well but basically self taught myself whole course. Homework is hard but midterms (15% of grade) are take home and super easy. Final is in person and worth 60% of the grade

Dai is a patient and enthusiastic professor. His teaching skill is okay and his slides are comprehensive and helpful. Attendance at lectures is optional. Midterms are easy. Besides that, I also had a fantastic TA, Connor, his sessions really helped me to improve.

Prof. Dai for 4A is okay, you don't need to come to lecture as long as you review the slides. Two online midterms which were easy too. He is really funny as a professor.

The worst professor ever lectures are awful and non informative

honestly. NOT that bad of a math professor, especially at UCSB. UCSB math professors often suck, but Dai is pretty good. sure his lectures arent the greatest, but if you do the homework and study outside of class you will do good. the two midterms and final are pretty easy if you do exactly that.

He was an amazing lecturer who really wanted everyone to succeed, you could tell he cared so much about all of his students. He was really helpful in office hours and gave homework hints during lecture. The homework was super hard, midterm was chill, final was brutal but fair if you did all of the homework/went over examples from lecture.

I really really like this professor. His lectures were really nice and he made the material approachable. It is a pretty difficult course and you definitely need to spend time outside of class reading the textbook and understanding the material, but the midterm/final were both very fair, though challenging.

Almost failed his class, dropped halfway through, took it with another professor later and got A. Gives trivial examples in class while homework seem like rocket science. This guy is too busy to accommodate students for extra office hours. Had other classes during his office hours so I had no chance to ask him questions, consequently the near fail.

hypocritical

Very clear lecture notes. Lots of homework but exams are not that hard as homework.

Math major. Took this as my first math class at UCSB. I didn't do well for the midterm, but I studied hard for the final and got an A. After taking a lot of math courses, I think he is one of the several professors that explain things clear and organized. If you want to get an A, just do all the homework and all the recommended exercises!

do not take his class

The lectures and homework teach enough to pass, but you'll want to go to CLAS to get an A/B. The exams are much harder than the homework and the textbook is horrible so it's hard to study, but if you go to CLAS and keep up with homework you should be fine. He's an average lecturer, not amazing but not horrible.

TBH Dai is not that good at explaining math stuffs and his lectures can be boring but he does seem caring. The class is primarily based on 1 midterm & 1 final. Most questions are fair if you read the textbook & do the hw and a few of them are slightly harder. If u learned linear algebra before/work hard on textbook&hw it's not hard to get an A.

Not a lot of room to write so I'll make bullets: -okay/average lecturer -has a sense of humor, tries to make class enjoyable -very important to read the book -go to TA's office hours -tests are mostly based off hw, so try to really understand it -bad at responding to emails -don't think he prepared me well enough for upper division math courses