This product contains a class set of numbers from 1-30. I like to assign each child a number - usually in alphabetical order. This number matches with any books they are given. I also train my firsties to put their number next to their names on all papers they do which makes filing and recording much faster. There are many ways to use these numbers! Just print, laminate (if desired) and place magnetic tape on the back. Put the child’s number on the side or front of his/her desk. Hope you find these to be a time saver!