Sorting is a beginning math skill. It helps children to organize their world and differentiate properties of objects. It is also a building block to numerical concepts, which later require children to group “sets” of objects in math computation such as multiplication and division. The more complicated the sorting is, the more high-level understanding is involved. As adults, it is important to keep in perspective that what we may see as a simple activity of sorting a pile of shapes into red circles and red squares is really the beginning of a child’s mathematical discovery.