| Summary: | 碩士 === 國立政治大學 === 經營管理碩士學程 === 91 === The Grade 1-9 English Teaching Curriculum was put into practice by the Ministry of Education in 2001. Due to the fact that there are too many students in each class and that there is not enough teaching media, the students fall into different levels in English proficiency. Some research concluded that an English Teaching Resource Centre should be established to enhance teachers’ teaching quality and to provide an on-line teaching aid, hence to give the students more learning opportunities and to improve their learning effects.
In this study, the on-line English teaching aid was discussed from the viewpoint of Knowledge Management. English Content Knowledge Ontology and English Teaching Knowledge Flow Architecture were suggested to provide an on-line teaching aid with a semantic retrieval system so as to initiate an innovative model for on-line English teaching aids.
The English Content Knowledge, Ontology, a model of English domain knowledge, defines the concepts and their attributes, as well as the multiple relationships between the concepts: Class（vertical）, Reciprocity（horizontal）, and dependency（grouping）relationships. An “instance” is hypostatized from an abstract class, and the integration of the abstract classes and the instances represent the English Content Knowledge Ontology built up in this research.
The present study has introduced Object Oriented concept that deemed the English content knowledge as an object and as an instance with different Attributes and Operations. Encapsulated attributes and operations engaged in coordination among different objects through exchanges of messages, and resulted in the achievement of the overall system operations. Meanwhile, each student would also be an object in the course of the study and possess different attributes and operations. The final goal, learning, could be achieved through the exchanges of messages for mission coordination.
UML was applied in the study to construct the three major models in the on-line English learning. Functional Model — Use case Diagram to model the user’s requirements for the system； Static Model — Class Diagram to abstract an object for showing a static architecture； Dynamic Model — Sequence Diagram to describe the information flow among the objects.
This research also attempted to explore the present circumstances of the primary school’s on-line English teaching aid websites. It illustrated the needs of developing architecture for a website with semantic retrieval functions, multiple choice ways of learning and diversified modes for learning assessments It will be able to record and analyse the learning effect and test the result, building up learning records (including learning style, habit, attitude and learning effect) in order to provide each student with more learning opportunities and to share teaching resources with all of the teachers.
Through the new learning model, the students are able to obtain learning resources to grow by themselves. The present study also urged more concern on the research and development of the English teaching website in order to provide more vitality to our children and their new learning methods. The model built up in this study may serve as a reference in the development of effective on-line English learning for children.
Key words: Grade 1-9 English Teaching Curriculum, Knowledge Management, Ontology, Semantic Retrieval System, Object Oriented, UML
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