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Teaching-Material Design Center An ontology-based system for

customizing reusable

Source: Computers and Education, Vol.46, Issue: 4 , May, 2006 , pp. 458-470

Author: Wang, Hei-Chia; Hsu, Chien-WeiDate: 2006/03/07Speaker: MeiYu Lin

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outline

IntroductionArchitecture of TMDCExperiment and ResultsConclusions

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Introduction_1/4

Purpose Reusing e-material from different providers and

integrating them for a particular course Semantic metadata, following the SCORM Content

Aggregation Model Searching method

For document Keyword search Full text search

For content Ontology search Thesaurus search

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Introduction_2/4

SCORM_1/2 Sharable Content Object Reference Model characteristics:

Accessibility, Interoperability, Durability, Reusability

Content Aggregation Model

Run-Time Environment

Overview Sequencing and Navigation

Sequencing Information & Behavior (from IMS)

IEEE API 1484.11.2

IEEE Data Model 1484.11.1

Meta-data (from IEEE LOM 1484.12)

Content Structure (derived from AICC)

Content Packaging (from IMS)

Sequencing Information (from IMS)

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Introduction_3/4

SCORM_2/2 Content Aggregation Model: like content structure

Content OrganizationContent Aggregation

Resource(Asset)

Organization

I tem

Item

Item

Item

Item

Resource(Asset)

Resource(Asset)

Resource(Asset)

Resource(Asset)

Resource(SCO)

Resource(SCO)

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Introduction_4/4

Ontology Classes Properties Individuals/Instances

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Architecture of TMDC_1/5

TMDC: Teaching-Material Design Center Four module

Teaching material repository module Course database module Ontology module Course authoring module

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Architecture of TMDC_2/5

Teaching material repository module preserves and manages learning objects

Course database module preserves the teaching material structure that has been developed

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Architecture of TMDC_3/5

Ontology module_1/2 2 ontologies

course ontology: describe the term relations among course topics

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Architecture of TMDC_4/5

Ontology module_2/2 2 ontologies

content ontology: describes the relations among learning objects in a material

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Architecture of TMDC_5/5

Course authoring module Step 1: Select course domain. Step 2: Describe the goal of teaching material. Step 3: Refer to similar courses. Step 4: Choose the course table of contents. Step 5: Design the teaching template. Step 6: Confirm the course outline. Step 7: Choose the content of teaching material. Step 8: Revise the content.

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Experiment and Results 1/4

Participants 30 postgraduate students who had been sectio

n tutors of the “Network Management” course used the TDMC system to design teaching mat

erial and compared it with the method they had used

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Experiment and Results 2/4

Experiment1

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Experiment and Results 3/4

Experiment2_1

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Experiment and Results 4/4

Experiment2_2

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Conclusions

Developed TMDC systemgive the provider and consumer a conveni

ent environment for producing and selecting teaching material