TA office Hours **Secs 201 & 202: Yitian Wang, wytq0628@gmail.com or ywang152@umd.edu Monday: 1--2pm in AVW 1143 Wednesday: 3--4pm in AVW 1143 **Sec 203: Mitchell Tracy, mittracy7@gmail.com Wednesday: 2--3pm in AVW 1143 (i.e. right after discussion). Tuesday: 11am--12pm in AVW 1145.