At the start he was kind of confusing, then he started cooking
Flash cards allowed for midterms, pretty easy midterms too if you just did the homework and the discussion worksheets. Hosted a lot of extra review help/zoom calls for help and if you attended those, he sometimes showed things that could be on the test.
Pretty fun class and Jukka is a great guy and he is very funny.

I'm not very religious, but I do wholeheartedly believe this man is an angel descended from the heavens. Jukka is the best professor I've had at UCLA so far, and I 100% recommend taking him if you need LS 30A/B. He is super understanding, accommodating, clear, and just an all-around nice person. Sometimes in the middle of lecture he'll just randomly say how much he loves us and it makes me want to cry he is so sweet. His slides are really easy to understand - he does a great job of turning pretty complicated topics into very organized presentations. He does give a lot of small assignments throughout the week (like pre-class/post-class work) that can be difficult to keep track of in the beginning, but once you get the hang of it it's not bad at all. His exams were very fair and he did an amazing job preparing us for it. In his review sessions, he'll literally go over problems of the exact same format before the midterm & final. He also provides practice exams and a whole slideshow of practice exam problems so you'll be set. Near the end, he gave more extra credit because it seemed like he just wanted everyone to get an A and not be stressed. The coding in 30B was harder than 30A, but I just got a lot of help from my TA and LA and I was fine. And it's not bad considering there wasn't any coding on our midterm or final. Overall, Jukka is your best friend so take 30B with him if you can!!!

The best professor I have ever had!! As someone who was genuinely TERRIBLE at math in high school, I found Jukka's explanations easy to understand. He offered so much help to his students and genuinely wanted everyone to succeed. He offered many office hours, practice problems, and overall support for his students. Jukka is an incredible professor, and if I could take another one of his classes, I absolutely would. I will say, this class was definitely a lot of work, but Jukka prepares you so well and makes sure you genuinely understand the topics introduced. 10/10, if you can take him, PLEASE DO!!

Overall solid teacher; he is super funny and just the type of person you would like to get to know. I wish I had gone to the office hours to talk to him more, but he is great at explaining. Take this class if you want to improve well.

This class meets three times a week with one discussion. The lectures and discussions are only 50 minutes. Every week you have to complete a good amount of practice problems, post class refelections, a worksheet, and there is a weekly quiz in the discussion. The workload was a lot, but it definitely helps you succeed in the exams. The professor is super helpful. He provides his students with practice midterms and review questions before the exam. He is also always open to meeting with his students during student hours or whenever you need his help. If you're taking this class, I definitely recommend taking it with Jukka!!!

You can't really understand his lectures, doesn't really do practice problems in class, just explains theories. Take 31A and not 31AL, they had way easier finals than this course which is supposed to be easier in a sense. He also wears a mask during lecture so its very difficult to understand him through it. There was also obnoxious post-class reflections that I found useless. Wouldn't recommend at all!

The MVP, the GOAT. Many words can be used to describe Juuka. This class was the best. He makes you feel secure and not stupid when you don't understand. His goal is to make sure everyone passes, and he does so very well. He reads the slides but then dives into each concept and tries to explain it in a way that all can understand. He is also very charismatic, which made the lecture enjoyable and never boring. If you need to take Calc 1, Juuka is your guy.

Okay, I know im bad at math but I studied and got help from plf tuturoing and outside of the classroom I understood the content. During class he over explains and makes it 10x more confusing. I talked to other people taking the same class and please take another teacher. His secound midterm was nothing like the practice or problems given and me and a bunch of kids told him and he said that we are crazy and that we could explain in essays on how its wrong and he might look over it. 100% dont take if you have the choice.

This is one of the best professors for the 31 series at UCLA. This class consistently performed better on midterms than the other regular 31A classes due to Jukka's incredible preparation materials and clear expectations. He cares about you, the class, and how people are understanding the material that he teaches. If you placed into this class with the diagnostic, it is well worth it to stick to this class even with the extra hour of lab time per week. That all being said, the workload is a fair amount and some concepts will be harder to understand than others, especially if you do not have a background in calc from high school. Even so, his midterms and final exams went well because he allows notecards and provides practice exams that are super similar to the actual exam. Overall, Jukka is a great professor and I would highly recommend not retaking the math diagnostic if he is the teacher for 31AL.

If there are Jukka fans I am one of them. If there is one Jukka fan I am them. If there are no Jukka fans I am dead. THIS MAN IS THE GOAT. Yes he gives homework and daily reviews but he only does that so you actually deeply understand the content and most is completion grade anyways. If you do everything he gives you, you don’t need to study and you’ll come out with such a thorough knowledge of calculus you’ll think you’re some sort of genius. Jukka is funny and engaging in lectures and SO. HELPFUL. He literally hosts office hours like every day and on the week of a midterm or final he hosts long review sessions where he goes over POSSIBLE QUESTIONS AND HOW TO SOLVE. He even hosts them on SUNDAYS. No need for God on Sundays you have Jukka. In all seriousness, he is a great teacher who clearly cares deeply about mathematics and the class. He will do what it takes for you to succeed. I would take this class 10x over again!