Lesson plan has originated from Gestalt psychology. The Gestalt theory of learning has a great influence on human learning. In the school the whole is perceived by a part. A unit plays an important role in learning. The learner usually takes help of the units in understanding and grasping the whole concept. The meaningful activities are related are related to one another within a unit. These activities provide the purposeful learning experiences and the learner understands the whole concept. This theory originates the concept of “Unit Plan”.