Course taken: His 3A
Boring lectures, good discussion, work well with your TA and you will be fine. Make sure that you have enough time to work and revise your paper in the way your TA tells you.

I ACTUALLY took History 3A with professor Alexander, and i really don't think he deserves that low of a rating.
But I'll be honest...

-His lectures are really boring and as other people have said, his power points are useless... BUT he also posts the outline of the actual notes he covers in lecture so even if you don't take notes, he provides them for you. He also made attendance mandatory since he had the TA's check off their students but some people would just sign in and leave. Professor Alexander would also stutter a lot but it didn't bother be much. He is very repetitive and basically takes an hour and 15 minutes to cover what he could have covered in 45 tops.
-This class was made up of a midterm, final, a paper, and your discussion grade.
If you keep up with at least most of the readings, pay attention in discussion and study his outline notes you should be able to pass with an A.
-The TA's are ultimately the one's who give you your grade so participating and going to office hours will definitely make your discussion section grade! So maintain a good relationship with them.
-Lastly I personally thought this was a really interesting class and even though I didn't learn it from the professor, he definitely provides you with the readings and notes to do well in the class