Common Core Alignment:.

2.G.2:

Geometry

Reason With Shapes And Their Attributes.

Partition a rectangle into rows and columns of same-size squares and count to find the total number of them.

2.G.3:

Geometry

Reason With Shapes And Their Attributes.

Partition circles and rectangles into two, three, or four equal shares, describe the shares using the words halves, thirds, half of, a third of, etc., and describe the whole as two halves, three thirds, four fourths. Recognize that equal shares of identical wholes need not have the same shape.