Once a child is able to notice the differences between objects then they can work out how to use them and to move them around and within space.
Noticing small details is an important skill when learning to read. Often when children begin to read they do not notice the difference between letters that look similar and see them as the same. When children are able to notice the difference in letters they are able to quickly identify what a word is without having to stop and read every letter individually.
Sorting and grouping helps children to explore measurement and the function of groups of objects. ‘A glass is something that we drink from, its job is to hold liquid.’ We could also describe it by what it is made from, its size or the shape of the glass.