Here are the finished modules on Hierarchy:

1. Hierarchy as an Integrative Learning Theme
2. Hierarchies in Astronomy/Cosmology (3 phenomenological case studies)
3. Hierarchies in Physics (3 phenomenological case studies)
4. Hierarchies in Chemistry (3 phenomenological case studies)
5. Hierarchies in Geology (3 phenomenological case studies)
6. Hierarchies in Biology (3 phenomenological case studies)
7. Hierarchies in Mathematics (3 phenomenological case studies)
8. Hierarchies in Computer Science (3 phenomenological case studies)
9. Applying Hierarchy Knowledge to Humanity