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Priit Tammets



Master thesis defence, Tallinn University, 2008

Master thesis defence, Tallinn University, 2008



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Priit Tammets Priit Tammets Presentation Transcript

  • Visual Modelling Language for Describing Pedagogical Patterns
    • Priit Tammets
    • IMKE
  • Introduction
    • Communication gap
    • Visual communication
    • Alexander 1977, architecture
  • Research questions
    • How can existing workflow languages be used for visualising pedagogical patterns?
    • What adaptations are needed to workflow language in order to support analysing and designing distributed learning environments?
    • What is a minimal visual vocabulary for describing distributed learning environments in concordance with activity theory?
  • Goals
    • To analyse existing visual modelling languages
    • To develop vocabulary for new graphical modelling language
    • To evaluate new graphical modelling language
  • Theoretical part
    • Conceptual design issues - methodology of the conceptual design, and conceptual design of distributed learning environments
    • Overview of the existing visual modelling languages:
  • Concept maps
  • Mind maps
  • Flowcharts
  • Object modelling language (UML2)
  • Mathematical modelling languages (Petri nets)
  • Process modelling languages (newYAWL)
  • Garrett’s visual vocabulary
  • Practical part
    • Compiling new visual language - defining the requirements; definition of the Pedagogical Patterns and its usage in our context; visual representation of the new language, creating an Omnigraffle stencil
    • Evaluation based on action research; overview of the example course; implementing the language as a tool for course design; usability inspection
  • Results of the thesis
    • Existing workflow languages are not the most appropriate to be used without the modifications and adaptations for describing pedagogical patterns in distributed learning environments
  • Results of the thesis
    • Some elements should be adopted or presented in existing visual modelling languages, for example users, events, tool based tasks in order to support the better visualisation of the distributed learning environments
  • Results of the thesis
    • For supporting the activity theory based learning design model, visual modelling language should involve the following parts; objects, subjects, activity (consisting of task, the user role and rules) and instrument
  • Results of the thesis
    • A set of reusable graphical symbols was compiled for diagramming tool Omnigraffle
    • Uploaded: http://graffletopia.com/stencils/360
  • Future work
    • The developed and described visual modelling language is recommended to use in a learning environment design process, where no massive course is involved. Its graphical representation does not allow use of multiple user roles on one graph, which makes it hard to be practiced on more complicated cases. Those shortages should be taken into account in the further development process of visual modelling language developed in this master thesis.
  • Thank you!
  • Master thesis evaluation – Marlon Dumas:
    • An analysis of alternative techniques is undertaken in section 2 leading to the conclusion that YAWL is a suitable basis for the purpose. However, this analysis does not consider one relevant alternative: BPMN. Maybe including BPMN in the analysis in section 2 would have led to a more critical disctussion?