Prototype Iteration Sprint

Teams create rapid iterations of their greywater system prototype, starting with a low-fidelity paper or cardboard model and advancing to a functional medium-fidelity mockup. They integrate expert critiques and user feedback, updating an iteration log to capture changes and learning. Outputs include a low-fidelity prototype, a medium-fidelity functional mockup, and an iteration log that records what changed and why, focused on user needs and real-world constraints.