Recent studies suggest that Educational Television (ETV) broadcast from geostationary satellites can markedly reduce the cost and time required to provide educational opportunity for the citizens of large, less-developed countries. The sheer volume of educational needs precludes, however, the possibility of satisfying very many of them with only a…

The results of research on the effectiveness of four alternative instructional media are reviewed: traditional classroom instruction, instructional radio, instructional television, programed instruction, and computer-assisted instruction (CAI). It was concluded that students learn effectively from all these media; relatively few studies indicate…