Computing Difference Quotients - Concept

Taking precalculus will make finding tangents secant nature! Many people are confused by using difference quotients with limits in a derivative, and these videos help break it into smaller pieces. Leaving out the derivative and the limits, the presenter demonstrates how to simplify difference quotients into a simple slope formula for a secant line. 

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Instructional Ideas

  • After watching the instructional video, have class members attempt to solve the first example problem before watching the narrator solve it step by step; use the second and third example problems the same way
Classroom Considerations

  • Video best fits as an introduction to difference quotients and secant lines
  • Requires a computer with Internet access and flash to work properly
Pros

  • Includes a very clear step-by-step explanation
  • Contains three guided practice problems
Cons

  • None