Jukka is an absolute legend. I am absolutely gobsmacked as to how well Jukka ran his class. Jukka will take a bullet for you. Jukka would give you the shirt off his back. Jukka is extremely accommodating and takes suggestions very readily. It's been only a few weeks from the last time I was in his class, but I already miss it. If you can take Jukka's class, take it. Absolutely take it. There is not a lick of regret you will experience because it is almost impossible to get a bad grade with the amount of free points and buffer points on the exams he gives you. In fact, I've grown to respect Jukka so deeply that not only have I prepared an acrostic in his honor, but I will also be getting a tattoo of his face on my forehead and will be naming my firstborn Jukka Keranen.

To Jukka:
Just take his class
U will love him
King
Knows the difference between mathematical calculus and a renal calculus
Absolutely splendid

Jukka Keranen is god.

Jukka is hands down the best professor I have experienced at UCLA. Since this is a required class and most of you have to take it, absolutely 100% take it with him. He is so nice and considering to his students.

Jukka is king. I'm actually convinced I would have flunked without him. But he is the coolest dude, by far. Funny too.
Class structure is basically weekly homework, weekly lab, weekly quiz and the participation quizzes. He drops your lowest score for all of those, and you get infinite participation quiz tries. Weekly homework is worth doing just for the practice, especially if you are me and math hurts you. Weekly labs are pretty easy honestly, although I will note I had some python (and java) experience coming into this. But even without that you work in a group that can help you out. Weekly quizzes are doable if you attend/pay attention to lectures, and you get two tries (score is averaged between them).
Exam structure is actually whack but super generous. There's 3 stages. The first stage is literally just making a study guide with your group, and that's 30%. It's free points as long as you follow the instructions. Stage 2 is 40%, and it's an individual section. Make sure to check your work, and doing the practice exam questions he provides is the best way to study for it. Make sure you actually understand them. Stage 3 is group exam with your study guide group. Similar questions to the exam, and with 4 people working on it together you should probably do alright. It's a weird system but allows you to effectively bomb the individual portion (I did!) and still do fine (I did!). Additionally, he'll often offer point make-up opportunities for questions the class as a whole does bad on. So it's pretty fair, in my opinion.

I am not a math person. I did good anyways, and would have done better if I hadn't just stopped paying attention after the midterm. That was entirely a me problem. Jukka is a god among professors and has an amazing grading scheme and also I would trust him with my life. Definitely do the homework and the practice exam questions and make sure you actually understand them and double check your work. You should be okay,

Professor Jukka was a great instructor. He was always enthusiastic and would take the time to answer several questions during lecture with clear explanations. When he sensed that a good amount of the class was struggling with a concept, he would make sure to review it for a bit before getting into the rest of that day's lesson. The coding aspect of the class honestly wasn't as terrible as I thought it would be (just time consuming). Sometimes the workload was a but much, but it never really felt like useless busy work. Coming from someone who was very much lacking confidence in their math skills after high school, this class was enjoyable.

Firstly Jukka (yes we call him by his first name) is an incredibly enthusiastic professor that is eager to help his students excel. His explanations are very thorough and he truly has a grip on what parts of the course material are difficult and spends extra time on them. However, the course material is not interesting by any means, but if you can make yourself focus it becomes relatively easy to understand. The concepts are a bit abstract, but Jukka typically phrases it in a way that makes sense. I recommend reading the textbook as you complete your homework because the textbook is helpful and actually rather readable for a book about math. Overall, Jukka is a great professor who makes the LS30 series slightly more enjoyable than it otherwise would be.

Jukka is so incredible and I'd definitely recommend taking this course! He is super generous with the grading and is always willing to take suggestions from his students; he also responds to any emails/questions very quickly. The midterm was fairly easy but the final was a bit more challenging. While this is the case, the most challenging part of the class would be the homework assignments. Homework is graded off accuracy and the problems assigned are usually much harder than what is on the midterm/final.
Also not a review on Jukka (he's great) but this class is literally not math and the textbook is written by someone who thinks we understand more than we actually do.
Also Flippy and Puffers are very cute.

This class is basically Calc AB but taught using different terms, there are major concepts taught in this class that closely resemble things taught in AB like First deriv/second deriv rule and critical points, but are named different things. As long as you stay on track and do the homework little by little instead of procrastinating, and make sure you understand the concepts taught you should be good. Homework is hard because Jukka doesn't really teach us how to solve the problems during lectures so I watched office hours recordings to understand how to do some of them. The labs were kinda hard. I think that as long as you ask for help when you need it you should be good in this class because of how understanding/kind/amazing Jukka and his team of TAs are. Jukka is honestly such an amazing prof!!! I love him and I'm so glad I'm taking him for 30b. He's hilarious also.

I really enjoyed taking this class with Jukka. He cares a lot for his students and offers a good amount of extra credit. His lectures were recorded so it was very helpful to go back and rewatch confusing parts. Overall this class is not that difficult but it does get confusing at times because the math in this class can be really weird. There is a great amount of work that we have to complete. The amount of homework we got sometimes was a lot but I think it was manageable. He does go over some homework problems during his office hours so I recommend attending or watching most of his office hours. We also had weekly quizzes and weekly coding assignments. Some of the coding assignments were confusing but the TAs can help you. The midterm and final were not that difficult, for me the most difficult part was trying to finish the exams on time because the midterm had a 2-hour limit and the final had a 3-hour limit but you do have a 24-hour window to complete them.
Be prepared to work with other people. You are assigned a learning team at the beginning of the quarter and you're expected to complete the coding assignments with them and the first stage of both exams consists of completing a study guide with your learning team.
I recommend taking this class with Jukka! So take it with him if you can!!!