Professor Tawil is a terrible professor. I took BE10 with him. The class is not hard, it's just annoying. It's an introductory course so people don't normally take it seriously. I took it while I was a junior so the class was useless to me. Everything is way too broad and you don't learn anything in detail.... due to that fact, it's hard for people to predict what sort of questions will be on the quizzes. However, the class itself has nothing to do with Tawil's teaching abilities. His lectures put people to sleep. He wasn't helpful at all and tried to avoid students by telling his students to go to the TA's office hours instead. Moreover, when it comes down to grading, he was pretty irrational. I actively participated in every lecture and every discussion section. When I had my points break down, I received only a 14 out of 20. So I asked him why... and he told me that he just didn't feel like giving anyone above a 14. He wanted a curve at B- or B and I'm pretty sure he only gave 5% of the class an A or an A-. For the rest of my bioengineering career, I'm avoiding all his classes for electives because he's just an inadequate professor.