The document discusses educational technology resources like learning resource centres and state resource centres. It describes the activities of learning resource centres which include reading, learning, educational, cultural, cooperative, administrative and social activities. It then discusses the state institute of educational technology (SIET) which was established to promote learning through radio and television. The objectives and activities of SIET Kerala are provided, including producing educational programmes for TV and radio, designing teaching aids, and conducting film festivals. The advantages and disadvantages of educational technology systems are also summarized. Finally, the document discusses satellite instruction in India through the Satellite Instructional Television Experiment (SITE) project which aimed to educate rural populations using educational television programmes via satellite.