Students select a sustainability goal, analyse the root cause and challenges behind it, and design a solution — which they must build as a prototype and actually test. This guide covers only that core process — the 9 modules that are specific to Sustainability Innovation — with full review items, coaching points, and borderline cases. Everything a project needs beyond the core process (problem framing, iteration, value and impact, planning, collaboration, reflection, ethics, submission) is identical across all nine tracks and lives in NIM Project Guide — Advisor Edition. Read that once; read this for the track.