Lesson Plan

The Computation of the Slope of a Non-Vertical Line

Curated and Reviewed by Lesson Planet

Determine the slope when the unit rate is difficult to see. The 17th part of a 33-part series presents a situation that calls for a method to calculate the slope for any two points. It provides examples when the slope is hard to determine using previous methods and teaches the class the slope formula. Pupils then use it to determine that the slope of a line is the same — independent of the points used.

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CCSS: Designed
Additional Tags
Instructional Ideas
  • Have individuals create several similar triangles to show the slope is the same for all similar triangles, not just a few
Classroom Considerations
  • Resource is part of a group of lessons to show that the graph of a linear equation is a line
  • The notation of the slope formula is different than the conventional formula
Pros
  • Answer key shows all of the calculations in determining the slope
  • Resources are available in pdf and docx format
Cons
  • None
Common Core