Scientific and technical text as a foundation of argumentative instructive discourse

The article is devoted to the argumentative interaction investigation as a special kind of interactional discourse formation and reveals its specific parameters. To form the view of the argumentative instructive discourse interaction as an independent and complete object and give its definition it is necessary to distinguish its constituent units (i.e. to present the structure of educational discourse), determine its illocutive tasks, consider the main characteristics and present the peculiarities of educational scientific and technical texts as a foundation of argumentative and instructive discourse.