The mathematical purpose of this lesson is for students to remember how to create a box plot, and how to interpret data from an already constructed box plot. The work of this lesson connects to earlier work done in grade 6, when students learned how to construct and interpret box plots. In the associated Algebra 1 lesson, students collect data that will be displayed in a box plot.

Throughout this unit, students interpret, analyze, compare, and contrast different representations of data, so students should have an understanding of the characteristics of each representation. In this lesson, students calculate the five-number summary (lower quartile (Q1), upper quartile (Q3), minimum value, maximum value, and median) and create a whole-class human box plot. Students then work together to construct box plots, and engage in a gallery walk to see and interpret one another’s box plots. Students reason abstractly and quantitatively (MP2) as they interpret the box plot as it relates to data about their classmates.