Reporting Category: Geometry Standard: Mathematics.3.G.1.02 - Partition shapes into parts with equal areas. Express the area of each part as a unit fraction of the whole. For example, partition a shape into 4 parts with equal area, and describe the area of each part as 1/4 of the area of the shape.

Use your MCAS ruler to answer question 13.

A rectangle is shown below.

Draw line segments on the rectangle to divide the rectangle into 8 equal parts.

What fraction of the area of the whole rectangle is the area of each part?

Scoring Guide and Sample Student Work Select a score point in the table below to view the sample student response.

The student response demonstrates an exemplary understanding of the Geometry concepts involved in partitioning shapes into parts with equal areas and expressing the area of each part as a unit fraction of the whole. The student divides a rectangle into equal parts and writes a fraction to represent the area of one part.

The student response demonstrates a fair understanding of the Geometry concepts involved in partitioning shapes into parts with equal areas and expressing the area of each part as a unit fraction of the whole. While some aspects of the task are completed correctly, others are not. The mixed evidence provided by the student merits 1 point.

The student response contains insufficient evidence of an understanding of the Geometry concepts involved in partitioning shapes into parts with equal areas and expressing the area of each part as a unit fraction of the whole to merit any points.

Note: There are 2 sample student responses for Score Point 2.