Ass to ears
Male - 19 Years Old
At my University, the sections are basically the time slots for the classes. For example, I take a Logic class on Tuesdays and Thursdays from 1:00 pm to 2:15 pm. This is Section 5. It's the 5 class of the day in an hour and fifteen minute time slot. On your link anything the GEO 100 is GEO 100 (just different professors, days, rooms, etc.). Hope this offers some understanding.