1. Brett Solberg Sarah Schneider Ralph Davis

2. Students will be able to derive an accurate formula for finding the slope of a line.

3. Easy Moderate Steep Vertical Rating

4. Sort and Categorize Categorize the 6 hills according to our rating system. How do you determine which hill goes in which category? How do you determine steepness?

5. Steepness Which of these lines is steepest? What do they have in common? What are their differences? Can you measure the steepness of each line?

6. Steepness Which of these lines is steepest? What do they have in common? What are their differences? Can you measure the steepness of each line?

7. Formula How did you determine steepness? What problems did you find?

8. Test Test out your formula on these lines.

9. Formula Did your formula hold? What problems did you find?

10. Slope The slope is defined as the ratio of the "rise" divided by the "run" between two points on a line, or in other words, the ratio of the altitude change to the horizontal distance between any two points on the line.