This document outlines different models for crafting curriculum, including subject-centered, learner-centered, and problem-centered designs. The subject-centered model focuses on content and divides school hours among subjects like history and geography. Learner-centered designs emphasize the needs and interests of students, incorporating child-centered, experience-centered, and humanistic approaches. Problem-centered designs draw on social problems and involve students analyzing life situations or common human activities through a core curriculum approach.