Title:	CONSTRUCTING SCORM COMPLIANT COURSE BASED ON HIGH LEVEL PETRI NETS
Author(s):	Jun-ming Su , Shian-shyong Tseng , Chia-yu Chen , Jui-feng Weng
ISBN:	972-98947-7-9
Editors:	Kinshuk, Demetrios Sampson and Pedro Isaías
Year:	2004
Edition:	Single
Keywords:	Adaptive Learning Environment, High-Level Petri Net (HLPN), SCORM, Course Sequencing, Learning Activity.
Type:	Full Paper
First Page:	204
Last Page:	215
Language:	English
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Paper Abstract:	With rapid development of the Internet, e-learning system has become more and more popular. Currently, to solve the issue of sharing and reusing of teaching materials in different e-learning system, Sharable Content Object Reference Model (SCORM) is the most popular standard among existing international standards. In SCORM standard, the Sequencing and Navigation (SN) defines the course sequencing behavior, which controls the sequencing, selecting and delivering of course, and organizes the content into a hierarchical structure, namely Activity Tree (AT). However, the structures with complicated sequencing rules of Activity Tree (AT) in SCORM make the design and creation of course sequences hard. Therefore, how to provide a user-friendly authoring tool to easily and fast construct SCORM compliant course becomes an important issue. However, before developing the authoring tool, how to provide a systematic approach to analyze the sequencing rules and to transform the created course into SCORM compliant are our concerns. Therefore, in this paper, based upon the concept of Object Oriented Methodology (OOM), we propose a systematic approach, called Object Oriented Course Modeling (OOCM), to construct the SCORM compliant course. High-Level Petri Nets (HLPN), which are a powerful language for system modeling and validation, are applied to model the basic sequencing components, called Object-Oriented Activity Tree (OOAT), for constructing the SCORM course with complex sequencing behaviors. Every OOAT as a middleware represents a specific sequencing behaviors in learning activity and corresponding structure with associated sequencing rules of AT in SCORM. Thus, these OOATs can be efficiently used to model and construct the course with complex sequencing behaviors for different learning guidance. Moreover, two algorithms, called PN2AT and AT2CP, are also proposed to transform HLPN modeled by OOATs into a tree-like structure with related sequencing rules in Activity Tree (AT) and package the AT and related physical learning resources into a SCORM compliant course file described by XML language, respectively. Finally, for evaluating the practicability, an experimental example for building SCORM compliant course by OOATs approach has been done.
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