As in every course, you are responsible for the material presented in the lectures. Do not assume that any materials such as slides made available are a substitute for attending, and participating in, the lectures.
Unlike the undergrads in CS4613, missing labs will not be directly penalized. You are expected to keep up with posted lab exercises and to take advantage of the lab time if you need help with Racket.
I will track attendence at labs and use it in calibrating the marking scheme for the class.