Definitions and key concepts in Communication; Approaches and models of communication; Models of Development; The concept of Extension Methods. Types of Extension Methods; Use of different Extension Methods; Role of Communication in community development; Communication channels and forms; Indigenous Communication; Information Organisation; Distortion and loss; Non-verbal Communication; Communication strategies and skills; Public relations. Visual Aids; Classification of Visual Aids; Importance of Visual Aids; Development and use of Visual Aids; Selection of Visual Aids for specific learning situations; The use of field Demonstrations.