Lesson Plan: Rate of Change: Graphs Mathematics

This lesson plan includes the objectives, prerequisites, and exclusions of the lesson teaching students how to interpret real-life graphs in which two variables have a linear relationship.


Students will be able to

  • calculate the slope of a real-life graph at different intervals,
  • use a slope to draw conclusions about a graph,
  • compare two graphs and draw conclusions about their slopes,
  • draw a graph that represents a given real-life scenario or a table of values.


Students should already be familiar with

  • ratio and proportion,
  • unit rate,
  • calculating the gradient of a line,
  • plotting a table of values.


Students will not cover

  • the slope of nonlinear relationships,
  • distance–time graphs.

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