Develop an understanding of fractions (i.e., denominators 2, 3, 4, 6, 8, 10) as numbers. a.    A fraction 1/b (called a unit fraction) is the quantity formed by one part when a whole is partitioned into 𝑏 equal parts;  b. A fraction 𝑎/b is the quantity formed by 𝑎 parts of size 1; c. A fraction is a number that can be represented on a number line based on counts of a unit fraction; d. A fraction can be represented using set, area, and linear models.