This document discusses the phases of teaching: pre-active, interactive, and post-active. The pre-active phase is the planning stage where the teacher establishes goals and objectives and plans content, resources, and activities. The interactive phase is the implementation stage where the actual teaching occurs through perception, diagnosis, and reactive processes. The post-active phase is the evaluation stage where the teacher assesses student learning and achievement of objectives through tests, observations, and feedback to determine if re-teaching is needed and improve future lessons. All three phases are interrelated and work together to form the complete teaching process.