This worksheet, 4 colored pencils, a hard mint (Ice Breakers, Altoids, etc.) is all you'll need to have a wonderful, memorable, meaningful activity with your students. Each student gets a mint. Half of the class will be designated as "chewers" and the other half "non-chewers". At the start of the clock, the chewers will bite down 3 times on their hard mint, whereas the others will just slosh it around (whole) in their mouths. After each minute passes, the teacher will survey the class (by a show of hands) as to who still has some mint left in their mouth. A wonderful trend of how increasing the surface area (chewing) speeds up weathering and erosion dramatically! Graphing the activity with a nice bar graph is a wonderful finishing touch and great graphing practice.