The document discusses principles for selecting and organizing content for teaching, including ensuring content is aligned with curriculum goals, responds to learner needs, and covers essential topics fully. It also addresses teaching conceptual understanding, thinking skills, and values. Specifically, content should be valid, significant, balanced, self-sufficient, interesting, useful, and feasible to cover given time constraints. The structure of subject matter involves teaching critical thinking, creative thinking, attitudes, and values using a three-level approach integrating cognitive, affective, and behavioral dimensions. Values can be taught by exposing students to models and situations that reinforce good behavior.