摘要：The study objective was to substantiate the modes of alternation of physical exercises and rest intervals when teaching series of tasks aimed at motor skills development in boys aged 15 years. Materials and methods. The participants in the study were 40 boys aged 15. The children and their parents were fully informed about all the features of the study and gave their consent to participate in the experiment. To achieve the objective set,the following research methods were used: study and analysis of scientific and methodological literature;pedagogical observation,timing of training tasks;pedagogical experiment,methods of mathematical statistics,methods of mathematical experiment planning. During training,the method of algorithmic instructions was used. Results. The study found that the effectiveness of mastering series of training tasks depends on a mode of alternation of exercises and rest intervals. The results of analysis of variance and regression models show that the optimal mode of performing series of training tasks is within the range of 6-12 exercise repetitions with rest intervals of 60-120 sesonds. In the proposed matrix of factorial design,the selected step of factor variation is sufficient to study the impact of different modes of physical exercises on the effectiveness of teaching children and adolescents. Conclusions. The best options for teaching series of tasks to boys aged 15 during physical education classes are the following: series 1 – 12 repetitions,rest interval of 60–120 s;series 2 – 12 repetitions,rest interval of 120 s;series 3 – 12 repetitions,rest interval of 120 s;series 4 – 12 repetitions,rest interval of 120 s;series 5 – 12 repetitions,rest interval of 60 s;series 6 – 12 repetitions,rest interval of 60 s.
其他摘要：Мета дослідження – обгрунтувати режими чергування виконання фізичних вправ та інтервалів відпочинку у процесі навчання серій завдань,спрямованих на формування рухових навичок у хлопців 15 років. Матеріали і методи. У дослідженні взяли участь 40 хлопців 15
关键词：boys;training;physical exercises;programmed training;modes of exercises.
其他关键词：хлопці;навчання;фізичні вправи;програмоване навчання;режими виконання вправ.
