Children who are aware of the Big Idea that sets can be compared and ordered know that organizing things into groups makes it easier to figure out what we have more and less of.
© Erikson Institute’s Early Math Collaborative. Reprinted from Big Ideas of Early Mathematics (2014), Pearson Education.
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Children look for ways to organize and make sense of their world through play at school and home, as well as at clean-up time. 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.
All members of a household have things in common and things that set them apart. Exploring the important ways that More →
Does a polka-dotted sock match a striped sock? In the book A Pair of Socks young children will learn about an important early skill: matching.
A student organizes rocks into different groups based on their unique characteristics.
A child makes different groups out of a collection of keys.
A student organizes a collection of keys in different ways.