Reviews of professor Christopher O'Neill

Rating: 5.0/5, difficulty: 5.0/5
This class was one receiving most of my attention and still was having trouble because of how difficult the material was, however, Chris holds online office hours (COVID) and is always happy to help. He replies to emails quickly and explains any questions you may have thoroughly, he is a good teacher, loves his job. Expect group projects & tough HW

Rating: 4.0/5, difficulty: 4.0/5
Homework is hard, but it helps you learn. He tried out Oral Exams for the first time this year, and I liked it. These exams were easier than the homework. He tries to do some lecture and some hands on group work during classes. He is very available to help in office hours. He is more likely to give you hints the day before the homework is due :P

Rating: 5.0/5, difficulty: 4.0/5
Chris is the best. He gives you a lot of homework and the class is difficult, but he really cares. Chris loves teaching and tries his best. He holds tons of office hours and is very helpful. His classes do involve group work, though since Chris supports active learning. He still does lecture, so you can still learn even if you dislike group work.

Rating: 5.0/5, difficulty: 3.0/5
Chris is approachable, positive, kind, and helpful. Weekly homeworks are a challenge but doable, two oral exams and one written exam were straight-forward. Allows students to ask him homework questions through Discord and answers promptly on his own time. By far the best professor I have had at SDSU, math or otherwise. Loved him and this course.