Students will learn how to graphically determine the intervals where a function is increasing, decreasing, or constant. Here's a good video.

Conclude by giving your students these challenges:

- Olympic Triathlon by NRICH
- Big and Small Numbers in Physics by NRICH
- Counting Dolphins by NRICH
- Making Rectangles, Making Squares by NRICH
- 2002 AMC 8, Problem 7
- 2002 AMC 8, Problem 20