1. TEN IDEAS FOR BUILDING UNDERSTANDING FOR SLOPE OR RATE OF CHANGE Jim Rahn www.jamesrahn.com james.rahn334@gmail.com

2. Ask your students to describe their understanding of slope.

3. What might an initial lesson in slope look like? Compare the steepness of lines Idea 1

4. How can we numerically describe the steepness or slope of a line? Visualize the rate of change or the rise over the run Idea 2

5. Develop Rise over Run from Visuals Idea 3

6. Present Slope or Steepness of a Line in a Real World Context Idea 4

7. Calculate Rate of Change from Charts? GBD5 GBD6 Idea 5

8. Study Rates of Change in Different Tables for the Same Function GBD7 GBD8 Idea 6

9. I Have… Who Has… with Slope Idea 7

10. Use the Transformation App with Graphs Idea 8 Use both graphs and transformations to understand rate of change

11. Use the Transformation App with Graphs and Tables Idea 9 Use both graphs and tables to understand rate of change GBD 9

12. Engage Students in Comparing Slopes Idea 10 Collect data, analyze data, and compare rates of change or slope