Miroshnichenko V.I., Nizhevskа T.V., Protasenko A.V. The method of formation of motor skills of primary school students. The aim of the research is to improve the methods of forming the motor skills of primary school students. Objectives of the study are: 1. Determine the influence of various combinations of the conditions for performing exercises on the process of forming motor skills in acrobatics (for example, a somersault forward). 2. Determine the models of the dependence of the level of training of the exercise being studied on different combinations of conditions for their implementation. Material and methods. In this study 218 children of 7 years took part. Among them were 107 boys and 111 girls. Under the experimental conditions, separately for boys and girls, eight research groups were created, each of which had 12-14 schoolchildren. Research methods: analysis and generalization of scientific and methodological literature, pedagogical observations, conversations, pedagogical experiment, methods for planning multifactor experiments, methods of mathematical statistics. The influence of different combinations of the conditions of the exercise (the number of repetitions of exercises, the duration of breaks between lessons and repetitions) on the result of training the somersault forward was carried out according to the plan of the full factorial experiment (FFE) type 23.. Results. It is established that the process of learning motor actions must be preceded by special tasks aimed at increasing the overall level of skills to control movements in space, in time and in the degree of muscular effort. The organization of the fulfillment of these tasks is most effective on the basis of a rational combination of the time for their implementation. The basis for teaching these skills is the method of urgent and current information about the accuracy of the exercises. As methodical methods, visual and auditory limiter movements are used. The possibility of controlling the process of formation of motor skills in schoolchildren for 7 years in physical education classes based on regression models is shown. Optimal variants of the conditions for forming the motor skill of the somersault forward are determined taking into account the rational combination of the number of repetitions of exercises in the lesson, the duration of the break between lessons and repetitions. The results of the research enable the physical education teacher to optimize the learning process of motor actions, use the lesson time more rationally, increases its overall and motor density.