Proceedings

Structuring the educational content of any domain consists in breaking up the
knowledge in basic units of fine granularity, allowing for indexing, filtering and
reusing operations. A pedagogical unit (educational discipline) can be organized into
a structure which includes: curricula, pedagogical unit, courses, lessons, exercises and
elements of self-valuation. To represent the educational resources of a pedagogical
unit, the framework model is defined using an UML diagram (Figure 1). Within the
curriculum, the courses are planned; these contain the lessons, which are made up of
pedagogical objects, and the connections are actually represented - within the
framework model - by the aggregation of relationships between the appropriate
classes (pedagogical unit, curricula, lesson and pedagogical object).
Figure 1. Objectual structure of a pedagogical unit for e-learning training
Within the framework module we specify the particularities of the pedagogical object
including: the type (course, module, assisted-activity and so on), the name, and its
format. As we have already seen, the pedagogical objects are divided in two
categories (elemental OP and composite OP) depending on their complexity and
usage. This classification is represented by the aggregation of relationships between
the classes - composite pedagogical object, elemental pedagogical object and the
class - pedagogical object. In turn, the composite pedagogical objects consist of one
or more pedagogical objects (elementals or composites), which is represented in the
model by associating the classes “composite pedagogical object” and “pedagogical
object”.
The pedagogical objects composing a lesson can refer to: the content of the lesson, the
bibliographical sources, and the set of exercises and tests. The diversity of
achievement and presentation of the lessons and pedagogical objects presumes a
variety of resources (multimedia resources such pictures etc.). Once created, a
pedagogical object must be:
� reusable in different educational contexts;
� independent by the distribution support and training platform;
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