had him for the whole 109 series, is a great lecturer and provides very useful practice exams before the exams. doing the practice book problems is necessary to succeed on exams. very kind and understanding when you dont complete hw on time and office hours are helpful to clear up confusion. difficult course but put in the time and you're good

Had lewis for 109 B/C, & he is one of the best professors I've had at UCSB. I don't understand how he manages to make such a complicated subject so well organized & so much easier to understand. He has the sweetest energy and is so kind. He wore Hawaiian shirts every Friday. He does his best to make Ochem as bearable as possible, & has fair exams.

Lewis is a great professor, despite the subject's challenges. He equips you with essential tools, you have to choose your own approach. Some require more time to grasp topics, while others need less, but success is attainable with effort. Dedicate as much study time as you need, utilize textbook, and attend office hours.

Prof. Lewis genuinely cares about your success in the class. There are many ways to get help outside of class - forums on Gauchospace where he will respond with a detailed explanation, office hours, and CLAS. These three resources + book problems will guarantee your success in the class.

Most organized and clear instructor I've ever had. Lets you know exactly how to succeed and gives you the tools to do so. Believe the hype. Go with Lewis

Absolutely incredible, you won't find another professor like him.

5% people got A/A+ and he said the class did pretty well and refused to apply any curve.

He's solid, but definitely overhyped. I preferred Gainer for sure - Lewis's tests are a little easier but he doesn't drill it in the same way Gainer did.

He is definitely a solid professor, I just feel he's a little overhyped. His lectures are clear cut--he teaches out of the book and you know what it is that he will be covering each day if you do the homework. He answers questions well, but I just feel that he can get stale. Quizzes/tests were challenging very doable. Preferred Gainer.

Hardest chem class I've taken, but that is partially due to my workload this quarter. Lewis is undeniably the best Ochem professor here, but it's still ochem. You WILL fail if you don't put in the work. As everyone has said before, DO THE BOOK PROBLEMS AND GO TO OFFICE HOURS IF YOU NEED HELP.

Lewis is amazing. I think he was meant to be an ochem professor, like this was his calling or something. He's clear, fair, direct, and knowledgable. His tests are difficult, but in my opinion COMPLETELY fair, it's just the nature of the class is difficult. Lewis makes this class reasonable and puts in a lot of time to answer questions on the forum.

I hated this class and Lewis did not make it any easier. Quizzes were impossible to study for and they were way harder than the practice worksheets. It was also so annoying that he would only give us 1 minute for iClicker questions as soon as class starts. Sometimes the wifi would make it so I couldn't answer on time, but he does not care.