The television with its strong audio-visual effects belongs to the most influential means of of the mass communications. It is dynamic synthesis of the film, radio-show, photography, drawing and text plans elements . The television is used in all teaching forms, because by showing appropriate television programme it is gained better, faster and more durable knowledge which also influences the developement of intelectual capacity, independence and working criticism. The possibilities of television as an audio-visual teaching aid are huge. Important is its role as a mean of convergence of reality which is not available. Nowadays , the television productions can be recorded and projected in the teaching process as appropriate. The educational television can be implemented in various ways in modern classes. It can be a source of information or an addition to the classical class forms. The educational power of a television is cosniderably stronger when the teaching materials, teachers and pupils are prepared thoroughly and when the programme is broadcasted in the most appropriate time. The hardworking preparation of the teaching material, which is based on the appropriate didactical priciples and which is pedagogical analyzed in details, richly illustrated, and fit into whole educational work both in families and at school, contribute to the quality of the educational television. The pedagogical effects of the educational television are achieved easier if there is realized bilateral communication. Unfortunately, nowadays less and less attention is paid to the quality of television programme and the power of television for the educational purposes is less and less used, so the teachers and parents have a large task to train the children to make selection of the programmes and watch only those contents which can be useful for them.