I've taken PIC10A, math 170A and am taking math 135 with Dr. Barbaro, and she is my favorite professor at UCLA.

Her exams are often tough and long and require extensive studying, though her homework is usually given in reasonable amounts. She is extremely available to help you understand the problems, and will put problems directly from the homework onto the exams so that some of the proofs/problems look familiar.

I am impressed by the way she often provides alternative ways of understanding concepts, she gives skeletons to all the proofs she does so that it is easy to understand and study them for the exams, and she will give you extra material to help you study.

Best of all though, she is extremely nice and really cares that her students are understanding the material. She never gets upset if she has to repeat things or if students get totally lost.