Sets and Sorting: The Foundational Math of Making Groups

View more sets content on our website: Sets.

Sorting things into categories is one of the ways we make sense of the world around us. Sorting items into groups by specific attributes gives children the opportunity to define sets according to a rule of what does and does not belong together. Sets are basic to children’s thinking and learning. And they are basic to our number system.

Additional Resources:

Preschooler Sorting Rocks (video)

Setting Up a Sorting Station (handout)