In this study, the authors tried to optimize the process of development of motor qualities of 11-12 years-old schoolchildren within the framework of the athletics hours at school, to determine the optimal bundles of motor tasks of directed influence to fulfill the regulatory requirements of the school curriculum. The research carried out proved that through the differentiated treatment, the optimization of the teacher-student relationship and also the improvement of the interpersonal relationships are achieved to a great extent. In the physical education lessons, the exercises in combinations of regimens give positive results only if the development of the qualities of strength, as a theme, will be the owner both in the basic part and in the preparatory one. The application of the exercises for the development of the motor qualities proposed by us, as well as those in the school curriculum, allow us that the training lesson within the athletics department to take place more interestingly. In the lesson, the main role is played by the teacher who conducts with the students of prepubertary age, mobilizes them, organizes sports activities; the methods used, the determination of effort according to the level of group preparation must correspond to the technology prescribed in the experiment.