Describe a fraction 1/b as the quantity formed by 1 part when a whole is partitioned into b equal parts; describe a fraction a/b as the quantity formed by a parts of size 1/b.

Number Sense, Properties, and Operations

- Understand that equivalence is a foundation of mathematics represented in numbers, shapes, measures, expressions, and equations
Parts of a whole can be modeled and represented in different ways

Develop understanding of fractions as numbers.