🛠️ Prototype Sketch and Feedback Round

Teams turn their plan into a quick paper prototype or annotated systems diagram showing scrap input, sorting, airflow, decomposition space, output compost, and plant use. Students give feedback to 2 peers, receive feedback, and revise using a warm-cool-question protocol focused on user desirability, feasibility, and ecosystem safety. Revised sketches must show visible changes in a different color and include brief notes explaining why the team changed them.