The content for this class is fine; I was not personally too interested in the history of mathematics, but it was a change of pace from other history courses, which is nice. However, Professor Alexander usually just read off his slides the entire lecture, leading to most of the class being pretty boring. At the same time, attendance was mandatory for lectures.
The biggest issue for me, however, lied in the grading. We had weekly reading responses, which in my opinion were quite easy. However, no matter how well they were written and how much textual evidence was used, the entire class seemed to get a 94. These grades for the reading responses left far less leeway in regards to the tests (one midterm and one final) for those who wanted to keep an A. I got lucky and managed to keep an A in the class, but after most people averaged around a 90 on the tests, the 94 on the participation assignments most likely kept them all at A- grades. If you are fine with being in that position, while also enjoying just copying the slides down that Professor Alexander shares, then this class is fine. However, if you are looking for an A in an upper division history class, I would consider other options before taking this class.

A laid back professor. He treats his students like they are in college, not like high schoolers, which I appreciated. His tests were interesting, he adds terms you choose from to add within the paper, which helps in giving clues if you happen to forget important pieces of what was taught. The readings were very interesting and every week I enjoyed what I was to learn next. I went to his office hours and he was supportive and willing to talk about school, life, career goals, etc. I suggest taking him, plus his lectures are podcasted but do not miss too many classes since this accounts for 10% participation grade.

He's a great professor. Exactly what I expect for a college environment. His lectures are informative and he goes over key points more than once, so taking notes for his class is a good experience. I really enjoy him and wish I would have taken more classes with him before my senior year. I haven't personally interacted with him but he absolutely is nice and will help you if you ask. 180A is so interesting I have actually done all the readings for the class! He deserves a much higher rating. Very solid class and professor.