We had received the dependence of "How should school use it to teach an educational program?" research from NHK before. At that time, there are neither TV nor VTR. The research time limit is two years. We reluctantly received the research assignation.
They offered machine parts at the first year and we collected TV that is able to do using from each home. We worked on the collection of programmes when the equipment that is able to be used by the coursework was completed. We groped for the usage of a programme effective through the coursework that used the TV programme in the final fiscal year. We submitted the consignment research a report that summarized the result by each a school subject and ended.