




Massachusetts Comprehensive Assessment System
2012, Grade 3 Mathematics
Question 10: OpenResponse 

Reporting Category: Measurement Standard: 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 Work Select a score point in the table below to view the sample student response.
Score  Description 
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.
Grade 3 Mathematics
 Question 5: Data Analysis, Statistics, and Probability
 Question 10: Measurement
Return to the MCAS 2012 Student Work Directory
Last Updated: December 13, 2011


