Entire outline and free resources here: https://www.cfibootcamp.com/power-hour-lessons/teaching-airplane-systems-without-overwhelming-students
Most pilots know their airplane's systems at the rote level only. In this Power Hour, CFI Bootcamp explains how flight instructors can build conceptual understanding: what a system does, what normal and abnormal look like, and what to do next. You'll hear why the POH and PHAK fall short, which tools and handbooks fill the gap (including Cessna 172 electrical system simulators and UK ATPL material), how to teach one system at a time with block diagrams, and how to use the emergency checklist to connect systems knowledge to pilot action.