This is a cootie catcher that can be used as a review, as a study guide, or a partner quiz. It covers all the basics of slope:
b = y-intercept and m = slope
horizontal/vertical lines and their slopes
rate of change
My 8th/9th graders groan in delight while making a cootie catcher, but they do use them and learn in the process.
Instructions for folding the cootie catcher are included.
This file includes usage for YOUR classroom only.