Is foot length to forearm length a linear association? The class collects data of fellow scholars' foot length and the length of their forearms. They plot the data and find a line of best fit. Using that line, they make predictions of other people's body part lengths.

Concepts

scatter plots, bivariate data, line of best fit, body parts, measurement

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Additional Tags

math

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Instructional Ideas

• Gather data from outside the class to increase the age range
• Lead a discussion on limitations of predictions based upon collected data

Classroom Considerations

• The class should be able to determine the equation of a line given a graph

Pros

• Includes journal writing prompts
• Contains extension suggestions

Cons

• None

Common Core

8.SP.A.1 8.SP.A.2 8.SP.A.3 HSS-ID.B.6.a HSS-ID.B.6.c MP4 MP5 MP6