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Teaching-Material Design Center An ontology-based system for customizing reusable

This article presents the architecture and experiment results of the Teaching Material Design Center (TMDC), a system for customizing and reusing teaching materials. The system uses semantic metadata and ontology-based searches to integrate e-material from different providers for specific courses. The experiment involved 30 postgraduate students who compared the TMDC system with their usual method of designing teaching materials. The results showed that the TMDC system provided a convenient environment for producing and selecting teaching materials.

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Teaching-Material Design Center An ontology-based system for customizing reusable

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  1. 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-Wei Date: 2006/03/07 Speaker: MeiYu Lin

  2. outline • Introduction • Architecture of TMDC • Experiment and Results • Conclusions

  3. 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

  4. Introduction_2/4 • SCORM_1/2 • Sharable Content Object Reference Model • characteristics: • Accessibility, Interoperability, Durability, Reusability

  5. Introduction_3/4 • SCORM_2/2 • Content Aggregation Model: like content structure

  6. Introduction_4/4 • Ontology • Classes • Properties • Individuals/Instances

  7. Architecture of TMDC_1/5 • TMDC: Teaching-Material Design Center • Four module • Teaching material repository module • Course database module • Ontology module • Course authoring module

  8. 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

  9. Architecture of TMDC_3/5 • Ontology module_1/2 • 2 ontologies • course ontology: describe the term relations among course topics

  10. Architecture of TMDC_4/5 • Ontology module_2/2 • 2 ontologies • content ontology: describes the relations among learning objects in a material

  11. 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.

  12. Experiment and Results 1/4 • Participants • 30 postgraduate students who had been section tutors of the “Network Management” course • used the TDMC system to design teaching material and compared it with the method they had used

  13. Experiment and Results 2/4 • Experiment1

  14. Experiment and Results 3/4 • Experiment2_1

  15. Experiment and Results 4/4 • Experiment2_2

  16. Conclusions • Developed TMDC system • give the provider and consumer a convenient environment for producing and selecting teaching material

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