This document discusses Hodges' model, a conceptual framework for organizing healthcare knowledge into five domains. It was created in the 1980s as a way to support holistic care, direct curriculum, bridge theory and practice, and facilitate reflection. The document provides background on the model and outlines exercises applying it to a case study about a student struggling after family issues. It also discusses potential research directions for the model, such as exploring its relationship to threshold concepts and how it could be adapted for new purposes in the 21st century healthcare system and interdisciplinary fields.