Number sense is a big idea that includes a lot of math skills. Together, they help us make sense of math problems. For example, understanding more and less, larger and smaller, or greater than and less than; understanding quantities through counting objects; making sets and subitizing; and understanding cardinality — the order of numbers, such as first, second, and third. Place value helps us understand the number system and manipulate large numbers.
Dr. Rachel Lambert says, “Number sense and place value are definitely load-bearing walls for the rest of mathematics — in other words, these ideas about numbers and the number system are core mathematical ideas that are worthy of significant investment.” Dr. Lambert recommends choral counting and counting collections as great ways to practice number sense.
For more information on how to help kids learn fundamental math skills, see our full article Making Math Work for Kids with Disabilities.
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