My first quilt was this 'tube' method but instead of all squares, it was 4" strips ---tubed. Then 3" strips from the tube and separated at a joining and then in the center of the square. You stagger the colors so...you don't have to worry about the corners matching. Still the easiest quilt to do for me.
Layout
[ATTACH=CONFIG]152989[/ATTACH]
finished
[ATTACH=CONFIG]152990[/ATTACH]