Title 1 math teacher
I taught the regular classroom (3rd grade) for 13 years, and kindergarten/title1 Math for 10 years before doing Classroom Reduction and once again Title 1 math... I found an idea many years ago, in a book Amongst America's School Children, that I liked very much. It worked for me. It was to make an open polygon (3 sides of a square) of the desks. then, I put a smaller one inside the larger one with the children who needed the most help their. I taught inside that "U" shape, and then could walk between them for easy assistance each direction. When I wanted teams, the ones in front could move back to a partner behind him/her. And, it was easy to make teams of four, too. (I tried to graph it in to show an example, but the program wouldn't take spaces in between X's.)