Amazing dedication both to helping students that struggle while keeping more advanced students engaged. Lectures and slides are given with brilliant clarity. Office hours are helpful and enjoyable. Makes pop culture references and jokes to keep things from becoming monotonous and is about to drop a sick new mix-tape.

Jukka is honestly one of the best professors I have had at UCLA thus far. He truly cares about his students' success and learning. His practice exams are very intuitive and put you on the right path to being successful in his class. If more professors were like Jukka, students would not only learn efficiently but be much happier. I wish I would have taken him for 30a. He is so understanding and helpful, especially in office hours, and overall just a very kind person.

Overall, the LS 30 series is very easy and I did enjoy having a chill time going through it. The only part that wasn’t cool was the labs. They got progressively harder in LS 30B, but Jukka made it much better. He’s so knowledgeable about the content and cares very much about his students. He’s been always making funny references in class and always tries to make the lectures more engaging. He also has fire shoe game.

Jukka is a great professor who really wants his students to succeed. He posts his lecture slides the day before so students can preview the material. Jukka's lectures are very clear and focused, but he does talk fast so it's important to have the lecture slides with you. He also spends the first portion of lecture reviewing the previous lecture's material. iClickers are required for participation/attendance in lecture. The lab portion of this class builds on the coding concepts from LS30A, but are generally shorter and more focused than the 30A labs. Homework is graded on "significant progress towards the correct answer," which is at the discretion of the TA, but the lowest 2 scores are dropped. There is one midterm and a final for which Jukka provides practice templates and review sessions. The practice exams are *very* similar structure- and content-wise to the actual exams, so if you can do those then you will do fine in the class.

I love Jukka! He's very funny and approachable and also reviews the course material at such a great pace. He gives out excellent previous finals and midterms to study off of and puts in so much effort into his slides. I would 10/10 take his class again just for his neon backpack.

This class was a slight step up from 30A, but overall very doable. Exams were modeled very much like the practice exam, and Jukka posts the answers to those well in advance of midterm/final so you have time to practice and prepare. Also, he goes through the whole process of how to do certain problems on the homework during office hours which is extremely helpful as he will also sometimes give hints during those as to what might be a good question for a test. He explains concepts clearly but the material itself can be challenging to understand at times. I usually got confusion cleared up during office hours, though. Overall, Jukka is a great professor to have for 30B.

As someone who absolutely hated LS30B, Jukka totally redeemed this series for me. Other than the coding, which I will never like, I grew to like this class. Jukka is so fair and he gives out accurate practice tests. He knows what topics are difficult and spends extra time on them. He’s quirky but really a sweet funny guy, and I’ll miss his teaching!

Jukka's class was fairly easy. He only tests you on what he has taught you. Be sure to attend his office hours and do the practice problems he gives out before the midterm and final. These are very useful because they are quite similar to the exams themselves. Sometimes I found that his teaching style was unclear, so I just watched YouTube videos or looked back over his slides to review what he had said in class. If you put in the time to understand what he is teaching and can solve all the different types of problems he discusses in class, then you will do fine.

(Lastly, Jukka has a dry, sarcastic sense of humor and can seem a bit condescending, but he is actually a nice and funny guy. )

I took LIFESCI 30B with Jukka during Winter 2019.

Chances are that if you're looking at Bruinwalk for LS30B, you're probably required to take this class as a major prerequisite anyway and you're probably just comparing professors.

That being said, I was very happy to have Jukka as my professor for the LS 30 series. Although I do admit I often got bored during the lecture slides, they were effective in helping me learn the material. And although I spent many hours doing the assigned homework problems, they helped me become proficient at the material.

Jukka was also very helpful during his office hours and review sessions. He went over problems in great detail and it was obvious he cared a lot for his students' success.

The midterm and final study guides and practice templates prepare you extremely well. For the 30A midterm and final and the 30B midterm, Jukka was very straight forward--I did pretty well because he was clear about exactly what to study. The 30B final was slightly trickier but I still did pretty well.

Juuka Keranen is easily the best professor I've had at UCLA so far. He clearly cares for his students in a way that goes beyond just teaching. He's incredibly kind, approachable, and funny. In terms of the class itself, the material was slightly more challenging than that of LS30A, but it's definitely manageable and easy to understand if you put in the work. The midterm was straightforward and modeled after the study material he provides, so there should be no surprises there. Labs (coding), are still as annoying as they were in LS30A but they aren't graded hard and are a small part of your grade, and there's no lab exam! As the class reached the second half the material definitely became more conceptual but as long as you go to class, read the lecture slides, and pay attention to clicker questions, you'll be fine. If not, go to his office hours, they help a lot in understanding the material and going over homework problems. Juuka's teaching style is a bit formal and may sometimes confuse some with its notation but trust me, it's very very doable. The textbook wasn't as helpful in understanding the course as the lecture slides were. I didn't know what was going on in the class until 3 days before the final, but I just went over his lecture slides, attended his (amazing) review sessions and study material and came out with an A+. Take Juuka for LS30B if you want to learn, have a fun time, and get a good grade in a math class.