1. The document provides instructions for an activity that involves observing the function of a consumer product through non-destructive means before disassembling it. Students are asked to analyze a "Test Rack" device and hypothesize how it operates. 2. The purpose of the Test Rack is to test the safety of electrical cords on electronics by testing the flexibility of the cord ends. It uses pulleys connected to levers that are rotated by a motor to spin electronics and put their cords through flexibility testing. 3. By observing but not taking apart the device, students can guess how it works and identify its mechanical components, like the pulleys and levers, though the inner workings of the motor are hidden.