U-Shape or Horseshoe
Both plans seat 24. Whether the board is still the focus of the lesson.
U-Shape
Choose the U when students need the board and each other in the same hour. You stand in the opening.
14 by 13 grid, 7 rows.
Horseshoe
Choose the horseshoe when the conversation matters more than the board. The curve is wider and the middle stays open.
18 by 9 grid, 5 rows.