




Massachusetts Comprehensive Assessment System
2012, Grade 3 Mathematics
Question 5: OpenResponse 

Reporting Category: Data Analysis, Statistics, and Probability Standard: 3.D.3  Construct and draw conclusions from representations of data sets in the forms of tables, line plots, pictographs, tallies, and bar graphs. Standard: Mathematics.3.MD.2.03  Draw a scaled picture graph and a scaled bar graph to represent a data set with several categories. Solve one and twostep "how many more" and "how many less" problems using information presented in scaled bar graphs. For example, draw a bar graph in which each square in the bar graph might represent 5 pets.

The table below shows the numbers of seashells that four children found at the beach. Seashells FoundChild  Number of Seashells  Bob  9  Carlos  9  Edwin  5  Fred  10   Complete the bar graph below by drawing bars to show the number of seashells each child found.
 Use the data from your bar graph to write a sentence that compares the numbers of seashells the children found.

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 Data Analysis, Statistics, and Probability concepts involved in constructing bar graphs. The student constructs a bar graph and writes a comparison sentence about the data in the graph. 
2 
1 
The student response demonstrates a fair understanding of the Data Analysis, Statistics, and Probability concepts involved in constructing bar graphs. 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 Data Analysis, Statistics, and Probability concepts involved in constructing bar graphs 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: May 19, 2011


