Peter is pretty cool, but I wouldn't recommend him for Math 3A because he's not that good at teaching beginners calculus. Homework deadlines can be extended, and he's super flexible. You have to attend class, or you won't be able to catch up. I already understood concept of Calculus, but he made it even ore confusing than it had to be.

Peter is funny and seems to like working with students. However, he is terrible at teaching calculus to beginners. During lecture he spends more time roaming the lecture hall and talking than actually teaching and explaining the concepts. If you are new to calculus, then be prepared to struggle and learn on your own. Overall, a decent professor.

If you've never had calculus I would recommend going to class, otherwise if you're not new to it just look out for his homeworks and go to the quizzes and tests. He is rather funny but his lectures can get confusing if you're new to calc. He often extends due dates because he forgets to upload the homework a lot. He responds well and will help you.