This document discusses different approaches to curriculum design: 1. Subject-centered designs focus on academic content and include subject, discipline, correlation, and broad field models. These can compartmentalize learning. 2. Learner-centered designs focus on students and their experiences, interests, and development. These include child-centered, experience-centered, and problem-centered models. 3. Problem-centered designs organize curriculum around real or hypothetical problems for students to solve, such as life-situation and core designs that connect lessons to students' lives.