The Core of the Activity Concept of Extend Didactic Unit (EDU) Technology in Teaching Geometry

Abstract

The core of the concept allows to characterize the specifics
 of any pedagogical concept and to enable the theoretical and
 logical inference of its key provisions. It is formed by the basic laws
 and principles of the concept as a system of scientific knowledge.
 The activity concept of the technology of extend didactic units
 (EDU) is based on the idea of an action enlargement, as a fundamental
 strategic component. Then one of the components of the
 core of the activity concept EDU, explaining the regularities of its
 functioning, is the system of an action enlargement as didactic
 units.
 The given paper is reveals the gradual construction of a final (noncomputer)
 model of system of this enlargement using the phased
 construction of the auxiliary models: informational and symbolic.
 Also the mechanism of an action enlargement based on this model
 is described. Thus the essence of the model and the mechanism
 of an enlargement are showed on the subject material of the school
 course of geometry.