Perimeter or Seminar Circle
Both plans seat 20. Whether students need a desk.
Perimeter
Choose the perimeter when the middle is a stage or a lab floor and students still need a work surface on the wall.
10 by 10 grid, 8 rows.
Seminar Circle
Choose the seminar circle when the middle is the point and a desk would get in the way.
8 by 8 grid, 6 rows.