Instructional Video

Intervals of Increase and Decrease

How can you find the intervals that a function increases or decreases without using a graphing calculator? The first installment of a 13-part video series focuses on the applications of the derivative. Viewers first learn the connection between the derivative of a function and the increasing/decreasing behavior of that function by watching the concept video. The three problem videos then work through several examples.

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Instructional Ideas
  • Provide a challenge question for learners to investigate the relationship between derivatives and the increasing/decreasing behavior of a function before watching the concept video
  • Use the video during an introductory lesson on applying the derivative
Classroom Considerations
  • Be sure your pupils can determine derivatives fluently
  • Video allows viewers to pause narration so they can work out the problems
  • Problem videos start with simpler problems, then increase in difficulty
  • Might require membership to view the entire video if showing multiple videos in one sitting