What is number sense, and how might you develop it in a preschool activity?

• A. Understanding quantities, one-to-one correspondence, and counting; example: students count blocks and compare group sizes.
• B. The ability to memorize number names without counting.
• C. The concept of place value using base ten blocks.
• D. The idea that numbers have fixed values but cannot be compared in preschool.

Answer: (A)

Number sense in preschool means understanding quantities, recognizing how many objects are in a set, and linking counting to real-world amounts. It grows best through concrete, hands-on experiences that connect what you say with what children see. An effective activity is having children count blocks and then compare the sizes of different groups. As they count one by one, they practice saying the number names while matching each item to a number, which reinforces one-to-one correspondence. Comparing group sizes helps them discover more, fewer, and the same amount, building intuition about quantity and order. This kind of practice lays a solid foundation for later skills like addition and estimation.

Other options miss this core idea. Memorizing number names without counting doesn’t teach children about quantities or how numbers relate to amounts. Place value with base ten blocks is a later concept that extends beyond typical preschool goals. And the notion that numbers have fixed values but cannot be compared contradicts the basic preschool experience, where children naturally compare quantities to determine which group is larger, smaller, or equal.