Learning About Rate of Change in Linear Functions Using Interactive Graphs

This resource features two pairs of interactive graphs to help students explore rate of change and linear relationships. "Users can drag a slider on an interactive graph to modify a rate of change (cost per minute for phone use) and learn how modifications in that rate affect the linear graph displaying accumulation (the total cost of calls). In this first part, Constant Cost per Minute, the cost per minute for phone use remains constant over time. In the second part, Changing Cost per Minute, the cost per minute for phone use changes after the first sixty minutes of calls." (from NCTM's Illuminations)

Resource ID#: 643 Type: Teaching Idea

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Open Resource Page

Direct Link: https://www.nctm.org/Publications/Mathematics-Teacher/2016/Vol109/Issue6/Connecting-Functions-in-Geometry-and-Algebra/

General Information

Subject(s): Mathematics

Grade Level(s): 8

Intended Audience: Educators , Parents

Suggested Technology: Computer for Presenter, Computers for Students, Internet Connection, Java Plugin

Instructional Time: 2 Hour(s)

Keywords: graph, linear functions, rate of change, slope, x -intercept, y-intercept, constant,

Instructional Component Type(s): Teaching Idea, Virtual Manipulative,

Instructional Design Framework(s): Learning Cycle (e.g., 5E)

Resource Collection: General Collection

Aligned Standards

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