Represent the ups and downs of a bank account. The two-part task points out that some types of graphs may better show discrete functions than others. Pupils analyze a graph on how well it represents the situation. They develop their own graphs that show the jumps and falls in a balance of a bank account

Concepts

step functions, math modeling, graphing functions, graphing, banking, piecewise functions

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Additional Tags

math

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Instructional Ideas

• Use to lead a discussion on step function
• Ask class members to create a scenario that would be represented by the graph

Classroom Considerations

• It would be beneficial if the class understood how to use open and closed circles in a graph

Pros

• Answer key includes commentary to the teacher about the problem
• Includes a graphical and description to answer the question about the graph

Cons

• None

Common Core

HSF-IF.C.7.b MP4