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# Massachusetts Comprehensive Assessment System

 Question 10: Open-Response Reporting Category: MeasurementStandard: 3.M.4 - Estimate and find area and perimeter of a rectangle, using diagrams and grids, or by measuring.Standard: Mathematics.3.MD.3.07 - Relate area to the operations of multiplication and addition. Jaya drew a shaded rectangle on a grid, as shown below.What is the area, in square units, of Jaya’s shaded rectangle? __________ Show or explain how you got your answer.   Marc also drew a rectangle.Marc’s rectangle has the same area as Jaya’s rectangle.Marc’s rectangle has a width of 3 units.What is the length, in units, of Marc’s rectangle? __________ On the grid below, draw Marc’s rectangle.

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

ScoreDescription
2 The student response demonstrates an exemplary understanding of the Measurement concepts involved in finding the area of a rectangle using diagrams and grids. Given the width and area of a rectangle, the student determines the length.
2
1
The student response contains fair evidence of an understanding of the Measurement concepts involved in finding the area of a rectangle using diagrams and grids. While some aspects of the task are completed correctly, others are not. The mixed evidence provided by the student merits 1 point.
0
The student response contains insufficient evidence of an understanding of the Measurement concepts involved in finding the area of a rectangle using diagrams and grids, to merit any points.

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

None found...