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.

Possibly one of the worst classes I have ever taken. Lectures were very boring, unclear, and too fast to grasp anything. Professor had a condescending personality that made it difficult to approach him for help. I found this class unreasonably hard. Despite my poor experience, I was able to get a very good grade in this class, but I would definitely not recommend this class with this professor at all.

amazing professor who really cares about the learning of his students

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.

Very easy class. Didn't pay attention, only went to class for clickers. The only part that is a bit difficult are the labs which can be tedious at times. The professor is very kind, even setting up individual appointments with students after the midterm to discuss ways to help students improve.

Do not take a class with this professor. He made my life hellish haha. The material can be better taught by anyone else

I love Jukka! Amazing person and professor...

Best professor ever.

Best professor ever.

Take him!