Effective
Room Arrangement

When students are near the teacher, they tend to be on their best behavior. Effective teachers make an art of working the crowd -- otherwise known as management by walking around. In addition to suppressing goofing off, working the crowd provides an opportunity for the teacher to monitor students work.

To make working the crowd as easy as possible, teachers usually have to rearrange the furniture in their classrooms. The optimal room arrangement gives teachers broad walkways, while allowing them to get from any student to any other student in the fewest steps.

Source: Effective Room Arrangement