🛠️ Interactive Body System Prototype Build

In teams of 3–4, students construct a testable version of their interactive exhibit using materials such as cardboard, clear tubing, balloons, straws, string, tape, clay, and hand pumps. Models must show what changes during “exercise mode” (e.g., faster pump, larger lung expansion, stronger muscle pull) and include at least 3 labeled parts per system. Teams assign roles (builder, materials manager, labeler, recorder) and record Version 1 sketches and design choices in their iteration log, connecting features to specific user needs from their empathy maps and HMW statement.