Instructional Activity# Fitting Lines

Lesson 5. Unit 6. Grade 8 Open Up Resources

Open Up Resources20 min(s)

This Instructional Activity is a part of the Lesson 5, Unit 6, Grade 8. In this activity, students draw their own linear model to fit the data in a scatter plot. In one scatter plot, the data points are nearly linear, and in another there is much more variation in the data. A discussion follows about what makes some lines a better fitt than others. While students are working, monitor for different approaches to deciding where to draw the line. Approaches might include: Drawing the line that connects the leftmost point to the rightmost point (or the topmost point to the bottommost point).