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# Massachusetts Comprehensive Assessment System

 Question 18: Open-Response Reporting Category: Measurement and DataStandard: Mathematics.3.MD.3.06 - Measure areas by counting unit squares (square cm, square m, square in, square ft, and improvised units). Use the 1-inch tiles from your tool kit to answer question 18.In the space below, use some of the 1-inch tiles to make a rectangle. Trace around each tile to show how the tiles go together to make a rectangle.What is the area of the rectangle you made? The area of my rectangle is _____ square inches.Explain how you found the area of the rectangle you made in part (a).

### 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 and Data concepts involved in measuring areas by counting unit squares. The student uses tiles to make a rectangle and determines the area of the rectangle.
2
1 The student response demonstrates a fair understanding of the Measurement and Data concepts involved in measuring areas by counting unit squares. 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 and Data concepts involved in measuring areas by counting unit squares to merit any points.

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