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CCSS Alignment

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The student is below proficiency in HSF-LE.A.1 because the student is unable to distinguish between linear and exponential situations.

 

Standard referenced:

HSF-LE.A.1: Distinguish between situations that can be modeled with linear functions and with exponential functions.

1. CCSS Alignment

The student approaches proficiency in HSF-LE.A.2 by successfully creating explicit linear equations. There is no evidence of continuous or discrete understanding.

 

Standard referenced:

HSF-LE.A.2: Construct linear and exponential functions, including arithmetic and geometric sequences, given a graph, a description of a relationship, or two input-output pairs (include reading these from a table).  

2. Comprehension & Application

SMP.7: Look for and make use of structure.

 

Because the student does not attend to the details of a graph, the graphs do not provide meaningful information and could create some misconceptions. The student does seem to recognize some structure in the tables to help create the same explicit equation.

3. Understanding

The student’s reasoning about percent is incorrect. The student used a ratio to create a common difference.