Educational technology in India has come a long way from the use of simple audio visual aids to that of electronic media.
The history of radio broadcast for education can be traced back to the year 1932 when the All India Radio started offering programmes for schools for the first time.
At present, several stations regularly produce programmes for the schools and a large number of auxiliary stations relay these programmes to reach children and teachers in remote areas.
Based on numerous experiments and studies, the broadcasts have been made as self sufficient as feasible to ensure that the message of the broadcast is communicated to children even when the necessary assistance is not provided by the teachers.
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The radio programmes have also been made relatively independent of the pre and post broadcast activities of learners.