Tired of students calling your name or coming to you while you are working with a child one on one? My DMV style number system helps eliminate this problem. I print the number cards and laminate them, then I place a magnet on the back and stick them to the white board. If someone needs help while I am working with one student, they go to the board, grab a number and wait to be called on. On the smart board, I have the coordinating PowerPoint running and when I call a number, I change the number on the board.