This document discusses principles of teaching and instruction. It defines teaching as a process of interacting that engages students in learning activities to acquire knowledge, skills, and values. Teaching involves both science and art, using psychological research and creative implementation. Key factors in the teaching-learning process are the teacher, learner, content/strategies, and their interplay. Principles of learning include that it is experiential, discovery-based, evolutionary, and involves the whole person - intellectually and emotionally. Effective instruction follows principles like context, focus, socialization, individualization, sequence, and evaluation. Instruction can be managed through homogeneous, heterogeneous, or non-graded student groupings.