This document discusses different curriculum design models: 1. Subject-centered design organizes curriculum around academic subjects and focuses on mastery of content. It is the most familiar model but can lead to compartmentalization of learning. 2. Learner-centered designs like child-centered, experience-centered, and humanistic models make the learner's interests, needs, and experiences the starting point for curriculum. They aim to develop the whole child. 3. Problem-centered design organizes subjects around problems for students to solve through inquiry. It engages students with authentic real-world problems. The core design model focuses on common human activities and problems to provide general education through interdisciplinary study.