This requires a little bit of prep work on the teachers part. I handmade the inclined plane by using insulation tubing from Home Depot, I cut it in half and was able to double the amount of inclined planes I could make. You also will need 3 different weighted objects that fit on the inclined planes, I suggest weighted ball bearing from Home Depot. The idea is for the 3 objects to be as similar in size as possible for accuracy. This activity is quick and very informative, it also come with discussion questions for after that can be discussed whole class or in small groups.