This document discusses three permaculture principles related to Case Study #2:
1. Every element should perform multiple functions, as shown through the uses of comfrey plants and a pizza oven.
2. Redundancy, through collecting water from multiple sources and including multiple plants with the same functions.
3. Relative location, such as placing a water catch in a circular design to maximize reach, and planting warmer plants closer to bodies of water.
The document also discusses how the principle of observing and interacting relates to adapting to different classroom environments. A linked video shows a permaculture system addressing drought.