The document defines key terms used in agricultural extension programme planning such as programme, planning, plan, aims, objectives, goals, problems, solutions, projects, and plan of work. It also outlines principles of extension programme planning such as programmes being based on analysis of past experiences and future needs, having clear objectives to satisfy important needs, fixing priorities based on resources and time, involving people and relevant organizations at local levels, and having plans of work with provision for evaluation and reconsideration.