Find the Change

This Find the Change activity & project also includes:

This exercise is an opportunity for algebra learners to understand the connection between the slope of a line and points found on the line. Use similar triangles to explain why slope m is the same between any two points. Discuss with the class the concept that if the y intercept changes, there is a proportional relationship between the line graphs. 

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CCSS: Designed
Pros

  • An good introduction of point-slope form of an equation
Cons

  • The effect of the y intercept, b, is not clear
  • May need to break down into smaller parts
Common Core