Take everything you read here with a grain of salt.

This is probably the worst class I've taken at UCLA but it honestly was due to outside factors. Dr. Lee was pretty sick for most of the quarter so the class was definitely on the backburner- communication fell off the face of the earth and the class was pretty uninteractive. We were supposed to have quizzes for each lesson with a flipped classroom but we basically stopped having them after like week 6 or something and honestly they really helped me keep up with the content. Midterm 2 wasn't graded until the last day of grades being due (with no answer key uploaded) and the last homework assignment was abandoned. I also hate flipped classrooms and basically didn't attend live lectures for the last 5ish weeks as I felt they were pointless.

Overall though, tests were pretty fair, homework wasn't too hard, we had infinity attempts for quizzes and everything and he tried his best. At the end he said he even gave a light curve because the averages were a bit lower than expected (which is honestly unheard of for covid era 24hr tests ngl.) The lectures gave me enough information to succeed and even though I wish it were more engaging, I don't doubt that he'll be a better professor when he is at full strength.

Professor Lee is a very nice person. If you take his class, be prepared to spend a lot of time reading the textbook and trying to figure out the course material on your own.

As others have mentioned, Lee's prerecorded lecture videos were rather ineffective, mainly because he often uploads them only a couple hours before the live lecture. I have class during that time, so I had to watch the prerecorded video AFTER the live lecture- this defeats the purpose of having a flipped classroom with prerecorded videos. Lee's videos mainly consist him reading his notes word-for-word, so they weren't really helpful. His live lectures weren't much better; he struggled to answer students' questions and when he worked through some example problems, he rushed through them. I often had to consult the textbook or search online for answers to my questions since Lee's explanations were often vague and unclear.

His class also seems to be strangely disorganized. I understand Prof. Lee has been sick for most of the quarter, but the lack of organization is rather stunning. He started off by giving us prelecture quizzes and stopped doing so mid quarter (probably because he uploads prelecture videos late?). It takes him forever to grade midterms. For the second midterm, he said during Week 10 that the exam scores would be out "early this week." Reality: midterm 2 scores came back the day before the grade submission deadline (and after the final). It would have been nice to know our mistakes on midterm 2 so we can learn from them and not make the same mistakes on the final. On top of that, final course grades came out mere minutes before the submission deadline. This definitely heightened students' anxiety regarding their performance in this class.

Regarding exams, Prof. Lee's midterms definitely cannot be done in 1 hour as he claimed. There were 6 problems on midterm 2, with 3-5 parts on each problem. Midterm 2 took me 6-7 hours to complete, and there were reports of students taking over 12 hours to complete that midterm. The final was made more manageable though. His exams are fair in terms of difficulty.

This class gave me a lot of anxiety throughout the quarter, and even though I did well, I still feel my linear algebra foundation is very shaky. Prof. Lee tried his best; however, there are definitely ways he could have made this class a better learning experience.

Given the circumstances, Professor Lee did a great job. We had clear pre-recorded lectures, weekly hw, and a couple of quizzes. (10 I believe). Professor Lee was nice, respectful, and helpful in office hours. He even had extra office-hours on weekends before the exams. The pre-recorded lectures were delivered only a couple hours before the actual class, but he always posted them. He even finished a week early. I would recommend Professor Lee. Given all the work and effort he put into this class, he deserves much more appreciation.

Note: exams are a bit difficult, but doable.

Lee did a flipped course format which meant you had to watch a 1 hour 30 minute pre-lecture before each 50 minute lecture. This was pretty bad because it took up a lot of time. Because of this I ended up not attending discussion since the TA just did simple examples there. The textbook was the most helpful. Lee's examples in lecture were fairly good. I wouldn't take this class with Lee just because of the flipped course format.

Did a weird thing during my quarter. He pre recorded the lecture that had subject content but still did a live lecture going over examples. Very helpful since he was basically doing double the work and putting in double the time. Unfortunately his grading was very slow because of it.