Abstract
This article first summarizes our previous work on Educational Modelling and Visual Editors, to provide the context for our more recent work within the LORNET [1] research network that has led to the development of TELOS, an ontology-based system to support the design, development and delivery of Semantic Web learning environments. Within that system, a central piece is the Scenario Editor that enables the aggregation of resources (actors, activities, operations, documents, tools) into a visual multi-actor workflow/learnflow, which is the central model defining the environment. Another piece is the Ontology Editor that is used to associate execution and domain knowledge semantics to entities in the scenario. Using these tools, a new version of the Planet Game scenario has been build as a case study including an IMS-LD design at level A, B, C. We will analyze the case study to underline how it addresses some difficulties in the use of the IMS-LD specification. Finally, we will discuss the generality of this ontology-driven approach and this contribution to the field of educational modelling. Editors: Laurence Vignollet (Universite de Savoie, France). Interactive elements: Collage authoring tool is published in SourceForge and can be also downloaded from http://gsic.tel.uva.es/collage
Highlights
This article first summarizes our previous work on Educational Modelling and Visual Editors, to provide the context for our more recent work within the LORNET [1] research network that has led to the development of TELOS, an ontology-based system to support the design, development and delivery of Semantic Web learning environments
In the last two years we have moved to a another stage with the TELOS Scenario Editor that will be presented here, coupled with a player for IMS-LD scenarios at the three levels of the specification and an Ontology Editor to associate semantic references to scenario entities
The Scenario Editor is ontology-driven in the sense that the execution of a scenario depends on the association of its objects to a TELOS technical ontology described in the OWL-DL format (W3C 2004)
Summary
Our work on Educational Modelling Languages has started with the design of an instructional design support system called AGD (Paquette, Crevier and Aubin, 1994). MOT+LD uses a set of graphical symbols covering all the IMS-LD primitives at level A Most of these primitives are shown, together with Act 2 of our initial version of a Planet Game learning unit, presented in figure 2. We were able to execute that scenario by first exporting the visual model to an XML file compliant with IMS-LD This file was read into the IMS-LD RELOAD editor to edit the missing level B and C conditions, and the result was executed by the RELOAD Player. The new Scenario Editor covers all levels of the IMS-LD specification using visual symbols and links. We will briefly present these TELOS tools, the visual symbols used in the Scenario Editor, and the way they are semantically referenced.
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