The diploma thesis serves as informational material for all primary school teachers who want to build relationships in their classes and develop a pleasant atmosphere within the class team. At the same time, it also serves as support for future teachers in their studies and preparation for their profession. In my work, I focus on the topic of class relations between classmates and the strengthening of these relations through the proposed activities. In the diploma thesis, these activities are processed within the author's set of activities with following notes, including the results of the analysis of the effect of the author's set on the relations between students and the climate in the classroom.