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K–12 teaching and learning · from the UNC School of Education

Movie lines

http://illuminations.nctm.org/LessonDetail.aspx?ID=L629

A lesson plan for grades 9–12 Mathematics

Provider: National Council of Teachers of Mathematics


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This lesson allows students to apply their knowledge of linear equations and graphs in an authentic situation. Students plot data points corresponding to the cost of DVD rentals and interpret the results. Illuminations provides detailed instructions for completing the lesson.

Students will:

  • Graph a line based on data points.
  • Find the equation of a line.
  • Identify y-intercept and slope and state their significance in the context of the problem.
  • Extrapolate data.

NCTM Standards and Expectations:

  • Draw reasonable conclusions about a situation being modeled.
  • Analyze functions of one variable by investigating rates of change, intercepts, zeros, asymptotes, and local and global behavior.
  • Approximate and interpret rates of change from graphical and numerical data.

North Carolina Curriculum Alignment