The aim of the study was to develop models for planning and managing the development of the Mae hiza geri chudan technique in 8-year-old boys. Materials and methods. 32 of 8-year-old boys took part in the study. Children and their parents were informed about all peculiarities of the study and gave their consent to participate in the experiment. The following research methods were used to solve the tasks: study and analysis of scientific and methodological literature, pedagogical observation, timing of educational tasks, pedagogical experiment, methods of mathematical statistics, and methods of mathematical planning of the experiment. The method of algorithmic orders was used in the learning process. Results. The obtained correlations show the interrelation of training the Mae hiza geri chudan technique in Kyokushinkai karate with load intensity parameters such as the number of approaches and rest intervals. Because of determining the ratio of the largest estimation of variances to the sum of all estimations of variances and comparing its value with the critical one (Gcalcul. < Gtabl.), the hypothesis of homogeneity of variances of experimental data is accepted. The obtained values of Fisher's criterion (F) indicate the adequacy of the obtained mathematical models they are able to predict the results of the experiment with the required accuracy (Fcalcul. ≤ Ftabl.). Because of practical modeling of the pedagogical process, the following variants of conditions of educational tasks performance for mastering the Mae hiza geri chudan technique were obtained: 1 series – 4 approaches, rest interval 60–120 s; 2 series – 4 approaches, rest interval 60 s; 3 series – 2–4 approaches, rest interval 60 s; 4 series – 4 approaches, rest interval 60 s; 5 series – 4 approaches, rest interval 60–120 s; 6 series – 4 approaches, rest interval 60–120 s. Conclusions. The verification of the obtained regression models allows us to state that they adequately describe the results of the experiment. It is possible to plan and control the training process on the basis of regression equations and to select rational modes of training the Mae hiza geri chudan technique in Kyokushinkai karate in 8-year-old boys. The influence of exercise modes on the effectiveness of training in a series of motor tasks was determined as a result of the factorial experiment. The number of approaches positively influences the mastering of the first series by 95%, the second series by 81.4%, the third series by 71.4%, the fourth series by 71.3%, the fifth series by 96.5%, and the sixth series by 99.78%.