As for the kids, on the first day have them assigned a number 1,2, or 3, That will be there number for the month. And they all can slap the 31st on the calendar. Have them count 1,2,3. and which ever number comes next it is that child's turn to put up a number. Hope this helps, been a teacher and a parent and it can be difficult. Very cute, and I would make one for school except I am a sub.