The master plan for evaluation presented in this report was developed by a UNESCO consultant as part of an agreement between the Government of Thailand and the United Nations Development Program for a project providing technical assistance for strengthening educational radio for schools and out-of-school education. Although this plan is restricted…

Reports a 1974 survey of the 12,800 students taking courses in Britain's Open University to determine viewing and listening figures for each course and to compare the figures for different transmission times and the different faculties (disciplines). The average student watched about two-thirds of the TV and heard about half of the radio programs…

Argues that too much of the wrong kind of research has been carried out, using inappropriate methods, and proposes a framework for investigating the effectiveness of educational media. Twenty-seven references are listed. (LLS)

This study examines alternatives to direct transmission of television and radio programs for courses with low student enrollment at the Open University. Examined are cut-off points in terms of student numbers at which alternative means of distributing audio or audio-visual materials become more economical than direct television or radio…