Survey of adaptive e-learning models

The article provides an overview of adaptive e-learning models. For each model, the structure and the representation methods of educational content are described. An analysis of the strong and week features of the pre-sented e-learning models is discussed. The main lack is the absence of predefined didactic structure of the learning objects. This essentially restricts automatic checking the didactic completeness of the e-learning course. In the conclusion of the paper, we presented an outline of a new e-learning model, which includes the facilities of describ-ing the didactic structure of learning objects.