A Pictorial Glimpse of AV-TV; an Investigation and Evaluation of More Efficient Ways of Training Teachers to Improve Their Day-to-day Classroom Learning Activities and Procedures Through the Uses of Audio-visual Media (title VII, Project Number 015); and a Demonstration of In-service Teacher Training in Audio-visual Education Via Television and Related Means (title VII, Project Number B-117) Final Report by Walter A. Wittich, Principal Investigator,L. Clinton West, Interim Director [and] Gerald M. Schnabel, Project Assistant