The Counting and Cardinality domain of the CA Common Core Content Standards is a special category of the standards, just for TK and Kinder! That's because counting and cardinality-- or the knowledge of one-to-one correspondence of numbers to items-- is the foundation for all mathematics. This domain focuses on learning the names of the numbers in order, but more importantly, accurately putting them into use in order to functionally count. Using numbers functionally sets the stage for making sense of mathematics in all future grades.