A great deal of publicity is being given to high technology in education, particularly microcomputers and video-discs. There is a danger though that these developments are diverting attention away from the effects of equally powerful low-cost technology. Audio recording is not new in education, nor glamorous, but the development of cheap, easy-to-use audio-cassette equipment has already had a major impact on the use of educational broadcasting, both in schools and adult education. This book is addressed to administrators, planners and educators working in the field of education and training with a view to stimulating interest and attention in the areas of education and its related fields.