Students solve problems involving two, three, and four fair shares using area models and drawings. Students then partition rectangles into equal shares and find the area of shapes that have whole units and parts of units. Students then analyze, sort, and describe the attributes of polygons.

EXPECTATIONS
	Use this list of Expectations to assess students on the key concepts and skills in this unit.
E1*	Identify, describe, sort, and draw 2-dimensional shapes based on their attributes (e.g., square corners, number of sides, number of angles, number of parallel sides).
E2*	Partition shapes and sets into equal shares.
E3	Partition a rectangle into rows and columns of the same size unit to find the area.
E4*	Use words and models to describe equal shares (e.g., half, half of).
E5	Recognize that equal shares of the same whole do not have to be the same shape.
E6	Compose and decompose shapes into smaller shapes.
E7*	Recognize that the same fractional parts of different-size unit wholes are not equal.
E8*	Find the area of a shape on a grid using counting, repeated addition, and reasoning strategies.
E9	Recognize that different shapes can have the same area.
E10*	Demonstrate fluency with the subtraction facts related to the addition facts in Group E (11 − 1, 11 − 10, 12 − 2, 12 − 3, 12 − 4, 12 − 5, 12 − 7, 12 − 8, 12 − 9, 12 − 10, 13 − 3, 13 − 4, 13 − 5, 13 − 8, 13 − 9, 13 − 10, 14 − 5, 14 − 9).
E11	Determine the unknown number in an addition or subtraction sentence relating three whole numbers for the facts in Group E.
	* Denotes Benchmark Expectation