Lesson plan

Analyze graph accuracy by comparing linear and nonlinear situations

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teaches Common Core State Standards 8.F.B.5 http://corestandards.org/Math/Content/8/F/B/5
teaches Common Core State Standards MP4 http://corestandards.org/Math/Practice/MP4
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Big Ideas: Graphs of linear functions do not always represent real-world phenomenon accurately. In this lesson students use scenarios to compare the accuracy of a linear graph to that of a nonlinear graph. Students are given a real-world scenario and two different possible graphs -- one linear and one nonlinear. They are then asked to determine the reasonableness of a linear model in comparison to the nonlinear model. Special Materials: Ruler or Straightedge