This document discusses the meaning and definition of instructional supervision. It begins by explaining that supervision comes from the Latin root meaning "to oversee" or "have oversight of", and that instructional supervision implies providing leadership to teachers to improve instruction. It then provides a definition of instructional supervision from a dictionary of education as involving stimulating professional growth, selecting and revising educational objectives and methods, and evaluating instruction. The document goes on to list the key roles of an instructional supervisor as planner, organizer, leader, helper, evaluator, motivator, communicator, and decision maker. It concludes by noting some potential limitations of instructional supervision such as long hours, lack of authority, and mismatch between expectations and reality.