TeachingMaterial Design Center An ontologybased system for customizing

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: Mei. Yu Lin 1

outline l Introduction l Architecture of TMDC l Experiment and Results l Conclusions 2

Introduction_1/4 l Purpose ¡ ¡ l 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 l l ¡ Keyword search Full text search For content l l Ontology search Thesaurus search 3

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

Introduction_3/4 l SCORM_2/2 ¡ Content Aggregation Model: like content structure 5

Introduction_4/4 l Ontology ¡ Classes ¡ Properties ¡ Individuals/Instances 6

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

Architecture of TMDC_2/5 l Teaching material repository module ¡ l preserves and manages learning objects Course database module ¡ preserves the teaching material structure that has been developed 8

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

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

Architecture of TMDC_5/5 l 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. 11

Experiment and Results 1/4 l 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 12