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"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 ... more
"El autor pretende, con este estudio, intentar un análisis global del trabajo del agrónomo, llamado erróneamente "extensionista", como educador; pretende resaltar su indiscutible e importante tarea, junto a los campesinos (y con ellos), la cual no está correctamente comprendida en el concepto de ... more
"This report is the outcome of an expert mission, undertaken at the request of several Member States in the African region, by Unesco with the co-operation of the International Telecommunication Union and the Economic Commission for Africa. The mission approached its task from the point of view of t ... more
"The objective of the two week long 1972 Dag Hammarskjold Seminar was to break away from traditional and theoretical concepts of information work in order to gain a practical insight into communication, especially as it applies to social and economic development. Fifty participants and lecturers fro ... more
"The intention of this publication is to provide practical advice and guidance on the use of radio and television broadcasting in adult education. It is addressed to educational planners and administrators, educators responsible for curriculum development and teaching methodology, field-work organiz ... more