Eighth graders explore the concept of direct and inverse variation. In this direct and inverse variation instructional activity, 8th graders participate in an activity involving collecting data that varies directly. Students record the number of x's that can be drawn in 5, 10, 15, 20, 25, and 30 seconds. Students collect non-linear data using fulcrums, rulers, and pennies. Students compare the data from the x activity and the fulcrum activity.