THIS IS A SERIES OF ARTICLES ON POSSIBLE AND ACTUAL USES OF VIDEO TAPE MATERIAL AND PROCESSES TO IMPROVE TEACHER EFFICIENCY, COMPETENCY, AND INSIGHT. EMPHASIZED ARE INDIVIDUALIZED AND SMALL GROUP USES OF TELEVISION, PLUS ITS POTENTIAL AS A RESEARCH AND DIAGNOSTIC INSTRUMENT. THREE MAIN USES OF TELEVISION ARE DISCUSSED--AS A SUBSTITUTE FOR LIVE OBSERVATIONS OF CLASSROOMS AND CHILD GROUPS, IN MICROTEACHING, TO PREPARE ELEMENTARY AND SECONDARY TEACHERS AND COUNSELORS, FOR INSERVICE TRAINING. ONE ARTICLE DEALS WITH THE AMPLIFIED TELEPHONE AS A TEACHING MEDIUM. SOME RESEARCH FINDINGS AND EVALUATION METHODS ARE ALSO INCLUDED. (JM)