The document discusses the lecture-cum-demonstration method of teaching, which combines the traditional lecture method with hands-on demonstrations. It notes that this hybrid method is simple, helps impart both concrete and abstract knowledge, and allows students to remain active participants through experimentation and questioning. The key steps are planning, introducing the lesson, presenting content, and summarizing principles on the blackboard. While this method provides more information efficiently, students may lack opportunities for practical application and it can be one-sided if the instructor sets too fast a pace. The teacher must possess both theoretical and practical expertise to effectively relate principles with demonstrations.