摘要:To describe the management of communication between human being and the computer it is appropriate to employ graphic tools in order to describe and formulate the basic rules underlying this interaction. Interaction between student and LMS in the process of teaching and learning is a composite process and it is highly recommended to employ Petri nets for this purpose. The paper aims at presenting the principle of construction of linear and branching learning programmes and their subsequent formulation using Petri nets in education of natural science subjects.