Complex sentence: On the main campus in Roscommon the rooms are being redesigned as "active learning classrooms", in which rows of desks or tables are replaced with round tables placed throughout the room.
Split into simpler sentences: On the main campus in Roscommon the rooms are being redesigned to be an active learning classroom. What this means is that the classrooms instead of having the basic rows of desks or tables now have round tables placed sporadically throughout the room.