The use of broadcasting for strictly educational purposes must increasingly be thought of as an important part of the total educational strategy of every nation in the world; its purpose should be the maintenance, extension, and transmission of a culture. In developing countries, radio is more useful and effective than television because it is cheaper and can be heard in isolated villages whereas television transmission is much more limited and requires skilled manpower and great technical and financial resources. Educational authorities should control the policies for using education broadcasting; programs must contribute to the systematic growth of knowledge, have progressive and continuing effect, be accompanied by supporting documents, and allow active response from the audience. By these standards, television and radio have already proven their effectiveness in the teaching of mathematics, science, and languages. (jf)