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Design and Implementation of WBT System Components and Test Tools for WBT content standard

Design and Implementation of WBT System Components and Test Tools for WBT content standard. K. Nakabayashi, Y. Kubota(NTT-X,Inc./ Advanced Learning Infrastructure Consortium) H. Yoshida(Hitachi Electronics Services Co.,Ltd.) T.Shinohara(Transmedia K.K.). Agenda. Introduction

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Design and Implementation of WBT System Components and Test Tools for WBT content standard

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  1. Design and Implementation of WBT System Components and Test Tools for WBT content standard K. Nakabayashi, Y. Kubota(NTT-X,Inc./ Advanced Learning Infrastructure Consortium) H. Yoshida(Hitachi Electronics Services Co.,Ltd.) T.Shinohara(Transmedia K.K.)

  2. Agenda • Introduction • WBT courseware standards • WBT library module components • Test tool • Interoperability Experiment • Conclusion

  3. Introduction • Interoperability of Learning Content and learner information will promote: • To exchange contents on Learning Systems • To reduce contents price and improve contents quality • To enable reuse of learning contents • To provide mechanism for searching and exchange contents

  4. Introduction • Learning content standards are being developed: • AICC CMI(Computer Managed Instruction) • ADL SCORM(Sharable Content Object Reference Model) • Not easy to understand and implement • Difficulty to avoid ambiguities and implementation dependent terms

  5. Introduction • Our approach – To design and implement software to support development of WBT system/contents compliant to standards • WBT library module component • Test tools

  6. WBT courseware standard • AICC CMI Specification • Course Structure Format(CSF) • Tree-structured course including block and Assignable Unit(AU), prerequisites/completion requirement, defined as CSV file format • CMI/CBT communication protocol • HTTP-based AICC CMI Protocol(HACP) • CMI/CBT communication data model • Data model for learner information • Provided File Format/Javascript API

  7. WBT courseware standard • ADL SCORM Specification • Course structure format • XML binding for AICC CMI CSF • Sharable Content Object(SCO) API and data model • Javascript API for CMI/CBT communication, not including binding to HACP • Learning object metadata(LOM) • To index and describe content element

  8. WBT library components ’ CBT(SCO) CBT(SCO) Content Vendor’s CSF Authoring tool Vendor’s WBT Server AICC CMI CSF (CSV Format) CBT Interface Module CSF Import/Export Module CMI/CBT Communication Module CBT-API Module HACP SCORM CSF (XML Format) CSF Author WBT Server (WWW Server side) WBT Client (WWW Client side)

  9. WBT library components • CSF import/export module • To handle data model defined in both AICC CSV CSF and SCORM XML CSF including LOM • DOM-like API to manipulate CSF elements such as blocks, AU, objectives • To read/write AICC CMI CSF file and ADL SCORM CSF file

  10. WBT library components • CMI/CBT communication module • API for CMI/CBT communication protocol and data model: • Objects corresponding to each AUs • Launch and communication by the instance method

  11. WBT library components • CBT-API module • Implement Javascript SCORM API Specification • CBT Interface module • Application-oriented API for typical CBT contents such as true/false or multiple choice exercise

  12. Test tool • Test tool supports test functions to check the conformity of WBT content: • Test functions for CSF file • CSF Syntax check • CSF semantics check • Test functions for CBT contents • To check Content launch and communication sequence • To check on syntax and semantics of communication data

  13. Interoperability Experiment • Experiment with WBT Systems and contents implemented with WBT library components • In some case, no adjustment required • In some case, troubles due to bugor misinterpretation of the specification

  14. Conclusion • Library module components conforming to standard and test tool to check WBT content’s conformity were developed • Interoperability Experiment was conducted • The result proves they are effective to achieve the interoperability

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