In this performance assessment, students will be asked to interpret the rate of change (slope) and initial value (y-intercept) of a linear function in terms of the situation it models. Specifically, students will be asked to describe the slope and y-intercept when given a description, a description supported with a table, and a description supported with a graph.
This assessment might best be used after teaching rates of change (slope) and initial value (y-intercept) when presented with multiple representations (in words, tables, and graphs).
In this performance assessment, students will be asked to interpret the rate of change (slope) and initial value (y-intercept) of a linear function in terms of the situation it models. Specifically, students will be asked to describe the slope and y-intercept when given a description, a description supported with a table, and a description supported with a graph.
This assessment might best be used after teaching rates of change (slope) and initial value (y-intercept) when presented with multiple representations (in words, tables, and graphs).
| Big Ideas | Competencies |
|---|---|
B. Operations and Algebraic ThinkingStudents can use mathematics to analyze and evaluate historical, political, economic, scientific, and social problems and make conjectures about possible solutions. |
Functions 2Students can Interpret the rate of change and initial value of a linear function in terms of the situation it models, and in terms of its graph or a table of values. |
Below are analytic teacher rubrics. The column on the left shows the dimension that is being measured in the student’s performance. The levels across the top row indicate the performance level in the dimensions. Occasionally all dimensions and performance levels are exemplified by multiple students in a single recording.
| Dimensions | Not Yet Meeting Expectations | Meeting Expectations | Exceeding Expectations |
|---|---|---|---|
Reasoning and Explanation |
No exemplars at this time.
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No exemplars at this time.
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No exemplars at this time.
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