This document outlines different approaches to curriculum design, including subject-centered, discipline, correlation, broad field/interdisciplinary, and learner-centered designs. Subject-centered design focuses on textbook content for specific subjects. Discipline design focuses on academic disciplines. Correlation design links subjects to reduce fragmentation. Broad field design prevents compartmentalization by integrating related contents. Learner-centered designs make the learner the center, including child-centered, experience-centered, and humanistic approaches that focus on the needs, interests, experiences and self-direction of the learner.