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"Media for instruction can be characterized as big (expensive) or little (inexpensive), but research evidence suggests that whether a student learns more from one medium than another depends at least as much on how the medium is used as on what medium is used. Thus, this report discusses not only ex ... more
"El Centro Audiovisual Nacional del Ministerio de Educación inició sus actividades - en la línea de acción que hoy lo distingue - a fines de 1958 [...] la experiencia acumulada en todos estos años por el Centro Audiovisual Nacional le ha permitido definir dos grandes metas esenciales de trabajo ... more
"Moving knowledge and proved techniques from the more developed to the developing countries is the essence of the economic and technical cooperation programs. Wtihin this broad framework, communication media have two different but mutually complementing functions: one, to create or increase competen ... more