To give students a tangible model of an ecosystem and have them experience what could happen if a component of that ecosystem were removed; the authors developed a hands-on, inquiry-based activity that visually demonstrates the concept of a delicately balanced ecosystem through a modification of the popular game Jenga. This activity can be modified to fit classrooms in other regions by focusing on a locally endangered plant or animal, which can be determined by contacting local governmental agencies. (Contains 1 figure.)