Right on the button: Understanding cardinality
Want a quick and easy way to determine how well your child understands cardinality? (Cardinality refers to the number of items in a set and is fundamental to basic math operations like addition and subtraction!)
All you need is a table, a small towel or napkin, and at least ten small items, such as buttons.
 1. Put the buttons in a container that you can hold on your lap.
2. Lay the towel on the table and place any number of buttons underneath it so your child can’t see them. Then invite your child to play a guessing game with you.
3. Lift your side of the towel and count the buttons aloud, without using any gestures or motions.
4. Once you're done counting, ask your child, “How many buttons are under the towel?” |
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