Fall 2015 - Dr Yeh taught the last section of LS1, after Dr. Alfaro and Dr. Lloyd-Smith. Her section of the class was very interesting, and her exam was pretty fair. I could tell she was very passionate about her field. One good and bad thing is that her voice is very soft. This is a good thing because it makes re-listening to lectures very soothing, but beware, because it may make you sleepy. She was very nice whenever I talked to her after class, and I would definitely take more classes with her.
Winter 2019 - I disagree with the first two posters. Dr. Yeh's portion of the class was actually pretty interesting and I think she was very clear in the material she presented. She talks at a pace where you can take notes easily, which is important sometimes for clarifying or adding to the information on the slide. It is true that the exams are looking for knowledge on the big picture concepts, and I think that while the final was somewhat difficult, the midterm was extremely fair. The questions were all some sort of variant of questions/problems we were exposed to in lecture. This class may not be the easiest, but the material is certainly not all that difficult and it is very possible to get an A. I received a 100 on the midterm and an A on the final and received an A+.