I took his Math 1A class (1st semester of calculus) in Fall 2013, which was his first semester here.<p>Pros:<p>1)He made calculus engaging, exciting, and worth going to for an 8AM class. I never felt like it wasn&#x27;t worth it.
2)Convinced me to be a math major by inciting my passion for math.
3)He genuinely cares and spend an enormous amount of time working 1-on-1 with students to help everyone. He freely gives out his cell phone number and asks students to call him any time if they need help.<p>Cons:<p>1)His class is very poorly structured. No quizzes. The midterms don&#x27;t count if you don&#x27;t want them to, which means 100% of your grade can be the final. 
2)His Graduate Student Instructors that teach smaller group discussions get carte blanche to be as lazy as they want. They don&#x27;t have to administer quizzes and the three that I saw didn&#x27;t give a rat&#x27;s ass.
3)His exams are a joke. Most of it is literally just memorizing a proof. The basic derivatives and integrals on the test are really easy. Many of the pre-med and pre-Haas students love him because of the easy A&#x27;s he gives out.<p>In Summary: The department has valid claims against his classes, but he is doing something Berkeley&#x27;s math department desparately needs: teaching lower division math better.