Lesson Plan

1. Find patterns of association in scatter plots (C)

teaches Common Core State Standards CCSS.Math.Content.8.SP.A.1 http://corestandards.org/Math/Content/8/SP/A/1
teaches Common Core State Standards CCSS.Math.Practice.MP3 http://corestandards.org/Math/Practice/MP3
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Lesson objective: Understand that patterns of association between bivariate data can be determined by using scatter plots.

Students bring prior knowledge of plotting points from 5.G.A.2. This prior knowledge is extended to creating scatter plots as students determine patterns of association between variables. A conceptual challenge students may encounter is determining linear or nonlinear patterns. 

The concept is developed through work with scatter plots, which helps students see a picture of the data to determine if any patterns exist.

This work helps students deepen their understanding of numbers because students develop the idea that the association between variables can be described as a rational number.

Students engage in Mathematical Practice 3 (Construct viable arguments and critique the reasoning of others) as they describe the association between two different variables with just a few data points and then many data points in a scat.

Key vocabulary:

  • bivariate data
  • consistent scale
  • dependent variable
  • independent variable
  • negative association
  • outlier
  • patterns of association
  • positive association
  • scatter plot
  • x-axis
  • y-axis


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