 This paper proposes a local model of enhancing external motivation to maintain student motivation during their learning process. It also examines the behavior of agents, students, at various stages of adolescent development. The paper then discusses how computer modeling can be used to study the dynamics of strengthening or weakening student motivation. Finally, the any logic cloud computing environment was used to define the change in dynamics of strengthening of motivation of teenagers on an example of model of strengthening of external motivation. This article was authored by Larisa Okandratenko, Hanit T. Samelenko, Arnold E. Kiv and others.