Reviews of professor Changguang Dong

Rating: 2.0/5, difficulty: 2.0/5
He is not a very good professor... I basically self taught my way through math136. one thing that really sucked was that the class average was so high at the end of my term that he actually pushed UP the cutoff (A- was moved to 90-95 instead of 90-93) so I ended with an A- instead of an A with a 93.2. Tests aren't very difficult.

Rating: 2.0/5, difficulty: 4.0/5
Bad choice

Rating: 3.0/5, difficulty: 3.0/5
Overall, not a phenomenal lecturer--goes very fast and sometimes doesn't show all steps in his proofs.  But was nice enough and did a great job helping students prepare for exams.  Didn't give a ton of homework feedback, and was hard to access outside of class.  But definitely among the better upper level math professors

Rating: 5.0/5, difficulty: 3.0/5
Classmates would complain about the professor not explaining things well, but as someone who sat in the front and actually listened and didn't talk, the professor explained every concept so clearly. I aced every assignment and exam by just fully paying attention. He does have an accent, but if you listen it's fine. I would def recommend!!

Rating: 1.0/5, difficulty: 5.0/5
Worst prof ever

Rating: 1.0/5, difficulty: 2.0/5
Poorly run class. Dong didn't understand +/- grading and changed it multiple times after the final. They were changing a question on the final in the middle of the test because it was so poorly written. He is a nice guy and was willing to give back points, but this course is new and it shows with its disorganization.

Rating: 1.0/5, difficulty: 4.0/5
I basically self taught this whole course to myself. Lectures were more confusing than helpful. The professor doesn't know how to explain well. The TAs weren't much help at all. The only "resource" is a textbook where some of the practice question answers are wrong. Would avoid this course/professor at all costs.

Rating: 1.0/5, difficulty: 5.0/5
He kept going back on his word throughout the class. "Oh I'll curve your test" actually means "you have to come to me and fight for your grade". He doesnt answer student questions very well and his lectures were a waste of time. he changed our final grade because he didn't understand +/- grades which screwed everyones GPA big time