EDC pioneered the use of radio to bring curriculum and teacher training to classrooms in some of the world's least-developed countries. Throughout Africa and South America, radio has been a tremendous resource for learning and dissemination. Interactive Radio Instruction (IRI) is encompased under the more general term Interactive Audio Instruction (IAI), as evolving technology has allowed different forms of delivering these audio programs including CD players and MP3 players. IAI, which only requires an audio device and an adult facilitator, reaches large numbers of teachers and learners who are isolated by distance and poor infrastructure. It can be used in almost any setting, from formal classrooms to community learning centers to outdoor venues.
EDC uses Interactive Audio Instruction to deliver education to students, train teachers and mobilize communities in some of the hardest-to-reach places in the world, establishing sustainable systems with consistently positive results.