Chengxi Wang
Department of Mathematics
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3.8
Overall Rating
Based on 66 Users
Easiness 4.8 / 5 How easy the class is, 1 being extremely difficult and 5 being easy peasy.
Clarity 2.9 / 5 How clear the class is, 1 being extremely unclear and 5 being very clear.
Workload 4.8 / 5 How much workload the class is, 1 being extremely heavy and 5 being extremely light.
Helpfulness 2.9 / 5 How helpful the class is, 1 being not helpful at all and 5 being extremely helpful.

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GRADE DISTRIBUTIONS
71.9%
59.9%
47.9%
35.9%
24.0%
12.0%
0.0%
A+
A
A-
B+
B
B-
C+
C
C-
D+
D
D-
F

Grade distributions are collected using data from the UCLA Registrar’s Office.

66.3%
55.3%
44.2%
33.2%
22.1%
11.1%
0.0%
A+
A
A-
B+
B
B-
C+
C
C-
D+
D
D-
F

Grade distributions are collected using data from the UCLA Registrar’s Office.

79.6%
66.4%
53.1%
39.8%
26.5%
13.3%
0.0%
A+
A
A-
B+
B
B-
C+
C
C-
D+
D
D-
F

Grade distributions are collected using data from the UCLA Registrar’s Office.

69.4%
57.8%
46.3%
34.7%
23.1%
11.6%
0.0%
A+
A
A-
B+
B
B-
C+
C
C-
D+
D
D-
F

Grade distributions are collected using data from the UCLA Registrar’s Office.

80.4%
67.0%
53.6%
40.2%
26.8%
13.4%
0.0%
A+
A
A-
B+
B
B-
C+
C
C-
D+
D
D-
F

Grade distributions are collected using data from the UCLA Registrar’s Office.

76.6%
63.8%
51.0%
38.3%
25.5%
12.8%
0.0%
A+
A
A-
B+
B
B-
C+
C
C-
D+
D
D-
F

Grade distributions are collected using data from the UCLA Registrar’s Office.

ENROLLMENT DISTRIBUTIONS
Clear marks

Sorry, no enrollment data is available.

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Reviews (48)

3 of 5
3 of 5
Add your review...
Quarter: Winter 2024
Grade: A
Verified Reviewer This user is a verified UCLA student/alum.
March 24, 2024

Easy class easy A, but very bad learning experience. I think the prior reviews already said this though.

Wang is so nice on grading and so nice on making easy questions for the midterms and finals, but I just CANNOT stand how she 1. doesn't explain anything in her notes and 2. speeds through her lecture. I've only been to ONE in person lecture (her first few were online) and none after that. To be honest, I don't think she wants to teach. I don't see her passion at all :( I really really really hope that she will try to learn how to make her lectures engaging. It's like... she doesn't like teaching so she doesn't teach well, and then students dislike her teaching and don't go to lecture, and then she thinks her students aren't motivated to learn so she just puts less effort into teaching (because you need positive feedback for motivation right). She needs to break out of this vicious cycle.

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Quarter: Winter 2024
Grade: A+
Verified Reviewer This user is a verified UCLA student/alum.
March 24, 2024

TLDR:
Pretty straightforward A, all computation-based, bad lectures.
33A is not necessary (but it's also interesting and pretty easy class)
If you want to grasp DE theory more, gotta put in more effort on your own.

HW (6); 25%
Quizzes (3, online); 15%
Midterm; 20%
Final; 40%

Getting an A in this class is pretty straightforward; the tests Wang gives are fairly standard, if not easy computations (I think for the midterm, a fair amount of people started handing in tests after like 10 minutes, if that gives any perspective). If you can get your hands on past exams, she doesn't change much from them as well.

This class serves its purpose as a lower div DE class--you practice applying and learning techniques to solve simple DEs. "You can't learn anything about DEs" in the sense that the theory and proofs are only touched, then basically forgotten about (very computation oriented class; no theory-based T/F shenanigans if that worries you). This class is really as much maintenance as you want it (just learn the computation techniques if all you want is the A).

However, Wang's lectures were EXTREMELY dull, and for me, made DEs much less interesting than they should be :((. 75% percent of the time she'd go silent and when you looked back up, she'd written a completely new definition on the screen. If you're more of a self-learner, I'd honestly recommend just going by the lecture notes pdf she uses.

Helpful?

0 0 Please log in to provide feedback.
Quarter: Winter 2024
Grade: A
Verified Reviewer This user is a verified UCLA student/alum.
March 21, 2024

I’ve been waiting all quarter to write this one. If you are a math major and genuinely want to understand what you’re learning and want to understand the logic behind the math that you are doing, don’t take Wang. Taking a differential equations class with Wang was like being promised a gourmet meal but ending up with a confusing mix of ingredients that somehow never came together.

She had this habit of shortening words as if we were all in on some secret math language that she created, leaving us trying to figure out what she meant. It felt like she threw information at us without really getting it herself, which was obvious whenever she tried to answer questions. Her depth of understanding was as profound as a puddle, her explanations just didn't hit the mark, and she'd either skate around the answers or give explanations that left us even more confused.

It wasn’t a content heavy class, nor did it contain difficult concepts. Did I learn about differential equations? Yes, through my own research and self teaching. What did I learn from Wang? I learned that UCLA has put minimal thought into the hiring process of their professors. Wang is by far the worst teacher I have had in my entire academic career and I think I’ve left the class knowing LESS about math than I did going in.

Easy class tho, pretty much a free A if you know how to self-study well.

Helpful?

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Quarter: Winter 2024
Grade: N/A
Verified Reviewer This user is a verified UCLA student/alum.
March 11, 2024

Appreciate having the lecture notes and recordings posted. Very fair exams and homework.

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0 0 Please log in to provide feedback.
Quarter: Spring 2023
Grade: A
Verified Reviewer This user is a verified UCLA student/alum.
Jan. 9, 2024

I never attended lecture or discussion and got a 100 on the midterm and final. The only studying I did was the homeworks and Organic Chemistry Tutor youtube videos the day before the exams.

I am not flexing, the class is just that easy. Highly recommend.

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0 0 Please log in to provide feedback.
Quarter: Fall 2023
Grade: A
Verified Reviewer This user is a verified UCLA student/alum.
Dec. 30, 2023

Extremely easy professor. Did not go to any lectures. The professor's typed notes are sufficient to learning the course content. Make sure to do your quizzes, as they are easy to forget about and are worth a lot.

Helpful?

0 0 Please log in to provide feedback.
Quarter: Fall 2023
Grade: A
Verified Reviewer This user is a verified UCLA student/alum.
Dec. 30, 2023

I really recommend taking 33a before this class (its not a prereq for some reason but 33b uses a lot of linear algebra) and going to discussion. My TA (Stepan M.) was the GOAT, he covered this entire class in less time than the professor and it was much easier to follow and he spent the rest of the classes reviewing concepts and answering questions. Alternatively if your TA isn't incredible like Stepan, the text book is surprisingly good and you can learn all the content from it, her class notes are really good as well (or so I hear). However like everyone else says the lectures are kinda useless and confusing and the class is really easy.

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Quarter: Spring 2022
Grade: A
Verified Reviewer This user is a verified UCLA student/alum.
Dec. 21, 2023

Easiest class. She does teach the bare minimum.
Basically a free A, but you have to kind of self-learn the concepts (which are easy)

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0 0 Please log in to provide feedback.
Quarter: Fall 2023
Grade: A+
Verified Reviewer This user is a verified UCLA student/alum.
Dec. 19, 2023

She is a g when it comes to her midterm and final. Workload is extremely light with weekly homework consisting of a few questions a a quiz every 2/3 weeks (3 quizzes in total). If you're genuinely looking to learn math, take someone else as she does not go over certain topics (ex. Unforced Harmonic Motion, Trace Determinant Plane, Nonlinear Equations, etc.), but if you want an easy A, you're in luck.

Helpful?

0 0 Please log in to provide feedback.
Quarter: Fall 2023
Grade: A
Dec. 18, 2023

Abysmal professor (worst I've had in my entire time at UCLA) - like the other reviews state, she's extremely disengaging in class, hard to understand, and puts little to no effort to help confused students. When people would ask questions at review sessions, she would just tell them to rewatch lectures, which were incoherent snoozefests. I attended none after week 4 and only reviewed the printed notes online, which she didn't even write - I would recommend people just look through those.

That being said, this class is extremely straightforward. You are told exactly what topics will be present on exams, and you only have to really do well on four homework assignments and two quizzes all quarter since the rest are dropped. You can easily get 100s on everything with very little effort.

Helpful?

0 0 Please log in to provide feedback.
Verified Reviewer This user is a verified UCLA student/alum.
Quarter: Winter 2024
Grade: A
March 24, 2024

Easy class easy A, but very bad learning experience. I think the prior reviews already said this though.

Wang is so nice on grading and so nice on making easy questions for the midterms and finals, but I just CANNOT stand how she 1. doesn't explain anything in her notes and 2. speeds through her lecture. I've only been to ONE in person lecture (her first few were online) and none after that. To be honest, I don't think she wants to teach. I don't see her passion at all :( I really really really hope that she will try to learn how to make her lectures engaging. It's like... she doesn't like teaching so she doesn't teach well, and then students dislike her teaching and don't go to lecture, and then she thinks her students aren't motivated to learn so she just puts less effort into teaching (because you need positive feedback for motivation right). She needs to break out of this vicious cycle.

Helpful?

0 0 Please log in to provide feedback.
Verified Reviewer This user is a verified UCLA student/alum.
Quarter: Winter 2024
Grade: A+
March 24, 2024

TLDR:
Pretty straightforward A, all computation-based, bad lectures.
33A is not necessary (but it's also interesting and pretty easy class)
If you want to grasp DE theory more, gotta put in more effort on your own.

HW (6); 25%
Quizzes (3, online); 15%
Midterm; 20%
Final; 40%

Getting an A in this class is pretty straightforward; the tests Wang gives are fairly standard, if not easy computations (I think for the midterm, a fair amount of people started handing in tests after like 10 minutes, if that gives any perspective). If you can get your hands on past exams, she doesn't change much from them as well.

This class serves its purpose as a lower div DE class--you practice applying and learning techniques to solve simple DEs. "You can't learn anything about DEs" in the sense that the theory and proofs are only touched, then basically forgotten about (very computation oriented class; no theory-based T/F shenanigans if that worries you). This class is really as much maintenance as you want it (just learn the computation techniques if all you want is the A).

However, Wang's lectures were EXTREMELY dull, and for me, made DEs much less interesting than they should be :((. 75% percent of the time she'd go silent and when you looked back up, she'd written a completely new definition on the screen. If you're more of a self-learner, I'd honestly recommend just going by the lecture notes pdf she uses.

Helpful?

0 0 Please log in to provide feedback.
Verified Reviewer This user is a verified UCLA student/alum.
Quarter: Winter 2024
Grade: A
March 21, 2024

I’ve been waiting all quarter to write this one. If you are a math major and genuinely want to understand what you’re learning and want to understand the logic behind the math that you are doing, don’t take Wang. Taking a differential equations class with Wang was like being promised a gourmet meal but ending up with a confusing mix of ingredients that somehow never came together.

She had this habit of shortening words as if we were all in on some secret math language that she created, leaving us trying to figure out what she meant. It felt like she threw information at us without really getting it herself, which was obvious whenever she tried to answer questions. Her depth of understanding was as profound as a puddle, her explanations just didn't hit the mark, and she'd either skate around the answers or give explanations that left us even more confused.

It wasn’t a content heavy class, nor did it contain difficult concepts. Did I learn about differential equations? Yes, through my own research and self teaching. What did I learn from Wang? I learned that UCLA has put minimal thought into the hiring process of their professors. Wang is by far the worst teacher I have had in my entire academic career and I think I’ve left the class knowing LESS about math than I did going in.

Easy class tho, pretty much a free A if you know how to self-study well.

Helpful?

0 0 Please log in to provide feedback.
Verified Reviewer This user is a verified UCLA student/alum.
Quarter: Winter 2024
Grade: N/A
March 11, 2024

Appreciate having the lecture notes and recordings posted. Very fair exams and homework.

Helpful?

0 0 Please log in to provide feedback.
Verified Reviewer This user is a verified UCLA student/alum.
Quarter: Spring 2023
Grade: A
Jan. 9, 2024

I never attended lecture or discussion and got a 100 on the midterm and final. The only studying I did was the homeworks and Organic Chemistry Tutor youtube videos the day before the exams.

I am not flexing, the class is just that easy. Highly recommend.

Helpful?

0 0 Please log in to provide feedback.
Verified Reviewer This user is a verified UCLA student/alum.
Quarter: Fall 2023
Grade: A
Dec. 30, 2023

Extremely easy professor. Did not go to any lectures. The professor's typed notes are sufficient to learning the course content. Make sure to do your quizzes, as they are easy to forget about and are worth a lot.

Helpful?

0 0 Please log in to provide feedback.
Verified Reviewer This user is a verified UCLA student/alum.
Quarter: Fall 2023
Grade: A
Dec. 30, 2023

I really recommend taking 33a before this class (its not a prereq for some reason but 33b uses a lot of linear algebra) and going to discussion. My TA (Stepan M.) was the GOAT, he covered this entire class in less time than the professor and it was much easier to follow and he spent the rest of the classes reviewing concepts and answering questions. Alternatively if your TA isn't incredible like Stepan, the text book is surprisingly good and you can learn all the content from it, her class notes are really good as well (or so I hear). However like everyone else says the lectures are kinda useless and confusing and the class is really easy.

Helpful?

0 0 Please log in to provide feedback.
Verified Reviewer This user is a verified UCLA student/alum.
Quarter: Spring 2022
Grade: A
Dec. 21, 2023

Easiest class. She does teach the bare minimum.
Basically a free A, but you have to kind of self-learn the concepts (which are easy)

Helpful?

0 0 Please log in to provide feedback.
Verified Reviewer This user is a verified UCLA student/alum.
Quarter: Fall 2023
Grade: A+
Dec. 19, 2023

She is a g when it comes to her midterm and final. Workload is extremely light with weekly homework consisting of a few questions a a quiz every 2/3 weeks (3 quizzes in total). If you're genuinely looking to learn math, take someone else as she does not go over certain topics (ex. Unforced Harmonic Motion, Trace Determinant Plane, Nonlinear Equations, etc.), but if you want an easy A, you're in luck.

Helpful?

0 0 Please log in to provide feedback.
Quarter: Fall 2023
Grade: A
Dec. 18, 2023

Abysmal professor (worst I've had in my entire time at UCLA) - like the other reviews state, she's extremely disengaging in class, hard to understand, and puts little to no effort to help confused students. When people would ask questions at review sessions, she would just tell them to rewatch lectures, which were incoherent snoozefests. I attended none after week 4 and only reviewed the printed notes online, which she didn't even write - I would recommend people just look through those.

That being said, this class is extremely straightforward. You are told exactly what topics will be present on exams, and you only have to really do well on four homework assignments and two quizzes all quarter since the rest are dropped. You can easily get 100s on everything with very little effort.

Helpful?

0 0 Please log in to provide feedback.
3 of 5
3.8
Overall Rating
Based on 66 Users
Easiness 4.8 / 5 How easy the class is, 1 being extremely difficult and 5 being easy peasy.
Clarity 2.9 / 5 How clear the class is, 1 being extremely unclear and 5 being very clear.
Workload 4.8 / 5 How much workload the class is, 1 being extremely heavy and 5 being extremely light.
Helpfulness 2.9 / 5 How helpful the class is, 1 being not helpful at all and 5 being extremely helpful.

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There are no relevant tags for this professor yet.

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