His lectures sometimes would fly over my head, but he's more than happy to clarify anything you didn't understand in-lecture and in office hours. The homework made me relatively comfortable with the material. As for exams, he didn't go TOO easy on us, but he made the tests fairly reasonable. He puts up helpful review questions to do beforehand.

The lectures weren't bad, but they also weren't very good. Heavy accent makes it hard to understand, and he speaks pretty fast. Going to lecture is important to understand the material, even though the lectures were boring. Homework can be difficult without much programming experience.

This class is a lot of work with or without Guo. He is completely willing to answer questions and break down concepts until you understand them. His lectures go at a good pace, if not too slow. The key to this class is to ask questions until you understand. Also, the homework/tests are very straightforward.

The issue with Guo is his accent and lectures. The textbook for this class was useless. He posts the notes online as well, but they're very difficult to interpret. He accommodates the Chinese students the most in office hours so those are also basically useless. You will need to teach yourself everything and that will be difficult. Don't take him.

Very organized lectures and notes. Make sure you don't skip class. Tests are fair if you do your homework and practice problems. Intro to pure math isn't the easiest course, but I think Dr. Guo did a good job in teaching it.

Professor Guo gives very organized notes during lectures. Although he has a very heavy accents, but if you get used to it then you will be fine. Very helpful during office hours. It's a super structured multi calc class. He also gives study guides and practice problems before midterms and finals, and full solutions are also provided.