Which skill is demonstrated when a child exclaims that there were five cookies after they cooled on a plate?

Which skill is demonstrated when a child exclaims that there were five cookies after they cooled on a plate?

• A. Number conservation
• B. Subitizing
• C. One-to-one correspondence
• D. Prefix

Answer: (B)

Subitizing is the ability to recognize a small number of items at a glance without counting. When the cookies sit on a plate and the child immediately says there are five, they’re perceiving the quantity instantly through sight rather than counting one by one. This quick recognition helps build early number sense and supports later counting skills by providing a fast, accurate sense of quantity from patterns and arrangement. If the child were counting, you’d expect them to point to each cookie and say a number in order, which would be a demonstration of one-to-one correspondence. The idea of number conservation isn’t being tested here, since there’s no demonstration that the total would stay the same if the cookies were moved or rearranged. Prefix is not related to recognizing quantity in this context.

Subitizing is the ability to recognize a small number of items at a glance without counting. When the cookies sit on a plate and the child immediately says there are five, they’re perceiving the quantity instantly through sight rather than counting one by one. This quick recognition helps build early number sense and supports later counting skills by providing a fast, accurate sense of quantity from patterns and arrangement.

If the child were counting, you’d expect them to point to each cookie and say a number in order, which would be a demonstration of one-to-one correspondence. The idea of number conservation isn’t being tested here, since there’s no demonstration that the total would stay the same if the cookies were moved or rearranged. Prefix is not related to recognizing quantity in this context.