In this document, a description is given of a one activity inservice session intended for teachers kindergarten through grade six. The objective of this activity is to identify the launch angle of a catapult as the variable controlling the distance a projectile will travel. The activity conducted by participants of this workshop deals with the process of science, and is carried out by the participants exactly as their students would be expected to conduct it. Emphasized in the workshop are cooperative learning techniques, data gathering, data pooling, and other processes used in the field by practicing scientists as they attempt to learn something about previously unknown or little understood phenomena. The activity also includes a computer component. The activity includes: the science concept; objective; grade levels; time requirements; partial list of variables; science, math, and computer skills; vocabulary; materials; procedures; and curriculum extensions. (KR)