🚤 Rapid Prototype Test Run

Teams build a quick physical prototype from cardboard, foam board, tape, printed placeholders, or partial 3D-printed parts, then run a controlled water test using a shared measurement plan. They collect data on float level, tipping, straight-line travel, turning response, and component fit, then complete the weekly design-review gallery walk as a milestone checkpoint with prototype, test log, and revision targets. After testing, partners complete the required short talk on what changed, what failure taught them, and how they managed frustration or focus.