Abstract On a theoretical level with the support of literature, we offer some definitions of the concept of redundancy, point to the similarities and differences in the perception of this phenomenon in technical, social and pedagogical communication. We point out the positive and negative aspects of redundancy in the teacher's language. The research part is aimed at mapping the presence of redundancy in the language of primary education teachers. We were interested in which grade in the subject of mathematics is redundancy the most represented and whether it may be considered positive or unnecessary. The research was conducted at five primary schools on a sample of twenty teachers. The method of the research was the direct observation of lessons. The accuracy of the observation was ensured by audio recording and its analysis. We have found that redundancy is most often present in the third grade.

中文翻译：

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小学教师口头交流中的冗余

摘要在文献的理论支持下，我们提供了冗余概念的一些定义，指出了在技术，社会和教学交流中对这种现象的理解的异同。我们指出了教师语言冗余​​的积极和消极方面。研究部分旨在映射小学教师语言中冗余的存在。我们感兴趣的是，数学学科中哪个年级是冗余度最高的代表，以及它是否被认为是肯定的或不必要的。该研究是在5所小学对20名教师进行的。研究方法是直接观察教训。录音和分析确保了观测的准确性。