Changing Cost Per Minute


  • Jul 27 2010 7:47 PM

    Rita Nutsch

    This resource was matched by a member of the Brokers of Expertise Standards Matching Team.

Contributed By


In this lesson, one of a multi-part unit from Illuminations, students use an interactive graph to explore the relationship between change and accumulation. In this activity, the cost per minute for phone use changes after the first sixty minutes of calls. Students analyze how changing the cost per minute shown in the first graph affects the total cost shown in the second graph.

Learning Registry Activity


    Topics and Grades

    Grade: 6 to 8

    Topics: Algebra & Functions, Mathematics