These are the locations of the classes.
Blocker, Haynes Engineering Bldg, Innovative Learning Classroom Building, Heldenfels, etc.
It’s worth looking up the buildings on a campus map if your son ends up with back to back classes. Generally, there is a long enough passing period that students can walk/bike/bus across main campus for back to back classes, but if one is deep in west campus, then you’ll want to add more time to get to class. Sometimes it’s just unavoidable, and I’ve heard that profs can be accommodating if you notify them ahead of time of the situation.