The second molars on the top come in soon after those on the bottom. 3 years. Your child has a full set of 20 baby teeth. 4 years. Jaw and facial bones grow, creating space between the baby teeth for your child's permanent teeth to come in.
As the moon moves eastward around 13 to 15 degrees per day in the sky in its orbit about the earth (there are 360 degrees around the whole sky for it to complete its orbit in 27.3 days), it moves with respect to the background stars noticeably each day, causing it to rise nearly an hour later each day/night when compared to the previous day/night.
So the moon's motion has two parts to it. It looks like it's moving around the earth once per day along with everything else, but in addition to that it is actually moving around the earth once per month. That is what makes it move to a different place on the sky. It is even possible to watch the moon move, if you are patient enough.