I honestly loved this class. A lot of the reviews complain about how difficult the exams are, but honestly they felt appropriate considering this class is multivariable calculus at the end of the day. They require much more problem solving than the homework questions, and the TAs are incredibly generous with partial credit which is a total lifesaver. I really really enjoyed the challenge problem sets because I felt like they gave me preparation for upper division courses that require you to able to communicate mathematical ideas. He also lets you fill out a reflection at the end of the course and will potentially round your grade up depending on how thoughtful the reflection is, so he is definitely invested in your learning. At the end of the day, he clearly loves teaching, and he puts in the extra mile to make sure that his students feel welcomed and are learning what they need to learn. If you want a professor that cares about your success, definitely take this one.
As a note for the challenge problem sets, going to office hours for your TA and professor before they are due will ensure that you get an A on them and honestly a 100%. If you don't go to office hours, it will be a lot harder to do well.

*For reference I am a life science major*

Wong is the best professor I've taken math with at this school yet. I thoroughly enjoyed this class because it was straightforward and he focuses more on your learning than grades. The challenge problem sets were indeed challenging, but he encourages groupwork so getting full credit on them wasn't too hard. The lectures were organized which I appreciated, so we knew what lesson we were on and could keep track. The midterms and finals weren't super easy, but they were easy enough. If you knew your concepts, it was basically just application of that to some new types of problems. That being said, I didn't score perfectly on the tests but I still kept an A in the class. Wong pushed collaboration and so it didn't feel as isolated as a normal math class usually is. It wasn't a crazy workload either with the exception of the challenge problem sets being a little time-consuming, but it was only 2 for the entire quarter. For the complaints I've heard about this class being really difficult, I came out of this class with a pleasant experience.

Great professor. Very organized and clear lectures.

One of the best 32a professors--midterms were the easiest out of all of my friends, pacing was good, he really teaches well and doesn't just grade on tests. He gives writing challenge problems and allows you to have 2 grading options. Very very nice and helpful. Definitely take this professor's class!

I would not recommend

- Midterm Exams: challenging exams with abstract concepts not explicitly covered in class. In his defense, he did provide partial credit. Overall, it was impossible to study for them and they left me in tears. Breakdown: 4 questions, parts a-c. (one page cheat sheet allowed)

- Final Exam: Extremely difficult exam. Did not understand how to solve half the questions. Breakdown: true or false section, 8 questions some with multiple parts. (one page cheat sheet allowed).

- Discussion sections: The quizzes were really helpful in understanding the material. I wish the exams could be like his quizzes! They were written extremely well and manageable to solve. The LA was way better then the TA.

- Homework: The challenge problem sets took days to solve. Very inconsistent grading. 2 people can work on it together and submit virtually identical results and yet one will score 20 percent higher.

- Office Hours: He tries to be helpful, but his explanations are far too complex for most normal people to understand. He is also very quiet so sometimes it's hard to hear.

- Lectures: Great lectures, throughly covers material in the textbook. Although sometimes appears to be disinterested and talks in a monotone voice.

Wong is really passionate about teaching. To do well in the class, you have to really understand the material. It is not enough to simply do the practice problems. You really need to be able to visualize the problems and understand what the formulas really yield. The midterms and final are really conceptual. However, the grading is not harsh at all. If you demonstrate some type of understanding through your work, you are guaranteed the majority of the credit. Wong assigns homework, but does not grade it, so it is pretty much optional. The only assignments you have are the weekly discussion sheets and the challenge problem sets. The challenge problem sets are basically like mini projects where you apply the material you learned in class. If you make them look professional and show some understanding, you will get a good grade on them. The math 32 series is supposed to be the hardest lover div math series but Wong did his best to make accommodations and make the class as easy as possible.

A pretty balanced class- Wong is a good professor but his exams are pretty difficult. He assigns two challenge problem sets (sort of heavy on workload and grading) but the discussion worksheets are counted as quizzes and are easy to get a good grade with a group. He provides a lot of partial credit and allows cheat sheets.
I personally wasn't able to focus too much on this class, but if you do give your best effort, I believe Wong gives you plenty of chances at earning a solid A. I can also definitely say that he cares a lot about his students- he wants you to be able to connect the concepts he teaches to real-life applications and add significance to what you are learning from him. I think he does that well.

This class is as hard as people say it is. It was challenging from the start, and at no point did it get easier. Multivariable calculus is just a hard concept to grasp, but the way Wong taught it didn't make it any easier. The lectures were a bit dull and complicated, but his slideshows were useful, and he does a great job providing us with resources. But, his exams were extremely hard, and so were his challenge problems. His challenge problems were hard to solve, tedious, and a significant amount to your grade. The grade you get really depends on whether or not you have a nice TA grade. I got 100% on both my challenge problems, and it really saved me because I did absolutely horrible on my exams. I personally didn't love Wong as my professor, but he also wasn't the worst.

(He does give a generous curve at the end of the quarter though if you fill out all of the reflections)

idk what this man was on but this class was ridiculous. he just graduated and you could tell he was excited to teach math but as a result automatically expected everyone to know what he was teaching which made class horrid. he also didn’t explain things well and often drew loads of pictures with no annotations or muffled explanations that looped on other answers. questions asked in class were often answered with the phrase “we’ll talk more later” or “ask next class”. extra credit assignments were really just a chance to redo the
graded assignments we flopped and
were actually taxing and often longer than the original assignments. just like the other person stated, i never came across students that said they passed. i love math so much but this class really made me feel slow

Wong was great! Very clear lectures and slides, with some examples. I'd heard that 32B was very hard, but Wong's class was totally manageable. HW was optional. Just had to do 2 challenge problem sets that were basically apply your knowledge to a slightly more complex problem and type up a solution that looks like a textbook page. A little tedious to get it properly done, but not difficult. Quizzes in discussion were with a group, easy 100s. Exams were a little tricky at times (I assume because they were 24 hour online, to make cheating harder). Nothing too unreasonable though. Definitely recommend taking him if possible!