Floris Books 1 2 Wheres The Shoe

Mr. and Mrs. Shoemaker have a very large family indeed. Every evening before snuggling into bed their ten children line up their shoes in a neat row so their parents can count them to make sure no child is missing.One evening Mr. Shoemaker can only count nine pairs of shoes. He calls in his foreign friends and neighbors to help him in case he has made a mistake, but they too can only count to nine in their languages. Has a child gone missing or is there some other explanation?