I had Professor Amar for MAE 105A and MAE 103. I didn't like him all that much in 105A because he seemed to enjoy making us suffer when giving us pop quizzes. However he told us when the quizzes were in 103 so that made things a lot better. He does have an attitude and can be quite sassy but he's a great teacher. I never had any trouble understanding what he taught (as long as I was paying attention). The first quiz in both classes was fairly easy but the ones after that were quite tricky. The midterms for both were fine. The 105A final was pretty hard but the 103 final was fairly easy. The homeworks were also quite short for both classes. I would recommend taking his class but don't bother asking any questions because he'll just ask you the same question back.