Message from Geo re his office:

For those who have questions about marking of term-test and problem  
sets, and would like to discuss with me in person, my office is at  
Room 209, Spadina 1.
I am usually there in the afternoon, mon - fri. You may sent an email
to me geo.tam@utoronto.ca or call me at 416-978-8433 for an
appointment. You have to enter the Spadina building through the door
on the east side. There is an electric lock which is off from the
morning until 5 pm. So you can enter the building freely before the
time. Do NOT go to the front door on the south side because it is
always locked. After you enter the building, go up to the 2nd floor
and look for room 209. There is another electric door. If it is
locked, please call again 416-978-8433 for me to let you in. Good luck.