The main course book is the central instructional resource in most classrooms because it provides a structured sequence of topics, learning objectives, activities, and assessments. Teaching the main course book effectively requires careful planning, learner-centered strategies, and the integration of supplementary methods that make learning meaningful and engaging. A teacher should not merely complete the textbook but should transform its content into an interactive learning experience that develops knowledge, skills, values, and critical thinking among students. The first step in teaching the main course book is understanding its objectives, organization, and expected learning outcomes. Teachers should analyze each chapter, identify key concepts, determine prerequisite knowledge, and plan suitable teaching-learning activities. Lesson planning helps organize instructional time, select appropriate methods, prepare teaching aids, and anticipate learners' difficulties. Before beginning a lesson, teachers should activate students' prior knowledge through brainstorming, questioning, storytelling, pictures, videos,