The methodology for gradually involving schoolchildren in research activities from choosing a topic to conducting a computational experiment, analyzing the results and their further publication is considered. It is proposed to use the Euler scheme with modification to increase the accuracy of calculations. It is proposed to use modeling of the movement of charged particles in the Earth's magnetic field as a research direction. To simplify calculations, the Earth's field was considered a dipole. Coulomb interaction and particle radiation were neglected. Experience shows that schoolchildren master simple numerical methods very well. They can calculate particle trajectories, analyze them, and understand that particles can only reach the Earth's surface near the poles. The stages of the study are selected so that schoolchildren can gain useful knowledge and skills, even if they do not have the patience to complete the work.
41.20.-q Applied classical electromagnetism
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$^2$Department of optics, spectroscopy and nanosystems physics, Faculty of Physics, M.V. Lomonosov Moscow State University.