Each night before we leave our daughter’s room, we count to ten. This allows her to more easily transition to us leaving because she knows what to expect. But it also helped her learn to count to ten. And because kiddos are notoriously creative at getting you to stay put at bedtime, she asked us to do it again using our fingers. If we were both in the room she wanted us to both do it – so she learned to count to 20. Then she wanted our fingers to disappear, so she’s learned to count backwards from 10.