The Advance Organizer Model (AOM) was developed by David Ausubel to explain how knowledge is organized in the curriculum and processed in the mind. It describes how teachers can present new information using advance organizers, which are introductory materials that bridge previous and new knowledge. The AOM involves 3 steps: 1) presenting an advance organizer, 2) presenting learning material in a logical order, and 3) strengthening cognitive organization through integration and reconciliation. It emphasizes structured, active collaboration between teachers and students and negotiation of meaning to connect new ideas to prior knowledge.