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VCRI. A groupware application for CSCL research Jos Jaspers & Marcel Broeken Educational sciences Utrecht University. Marcel Broeken. Jos Jaspers. CroCiCL project. Computerized Representation Of Coordination In Collaborative Learning. Overview. CSCL VCRI Tcl & VCRI

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slide1

VCRI

A groupware application for CSCL research

Jos Jaspers & Marcel Broeken

Educational sciences

Utrecht University

crocicl project
Marcel Broeken

Jos Jaspers

CroCiCL project

Computerized Representation Of Coordination In Collaborative Learning

overview
Overview
  • CSCL
  • VCRI
  • Tcl & VCRI
  • Conclusion & discussion
slide4
CSCL
  • Computer supported collaborative learning
  • Important topic in education
  • Subjects: about 17 years, college track
  • Project focus on participation
    • 3 new tools, 3 experiments
slide5
VCRI
  • Groupware application
  • WYSIWIS
  • Different toolsets
  • Logging  MEPA
  • Dynamic loading
  • Extensible
a bit of history
A bit of history
  • 1995 - 2007
  • TCP  TC3  VCRI
  • Visual Basic  Delphi  Tcl
  • 4 Tools  14 tools
vcri tools
Chat

Collaborative text processing

Diagram

Forum

Information sources

Selector

Planner

Logbook

Reflector

Notes

3D Visualization of participation

New tools:

Visualization of topic space

3D Argumentative diagram

VCRI tools
architecture
Architecture
  • Client/server
  • Remote sourcing/dynamic loading
  • Communication via (secure) http
  • Whenever possible cross-platform
tools
Tools
  • TclHttpd
  • Tclkit, Starkit
  • Metakit
  • [incr Tcl]
  • TkHTML
  • TkOGL
challenges
Challenges
  • Complexity, redundancy & legacy code
  • Eye candy
  • Cutting edge & different interests
  • Platform dependencies
printing
Printing
  • From screen to paper
    • Formatting
    • Conversion
  • From pc to printer
    • Printer detection
    • Printer selection
binary extensions
Binary extensions
  • Dependencies and Starkits
    • Platform dependency vs. cross-platform
  • Stubs
    • ‘A dynamic linking mechanism for Tcl, Tk and extensions’
    • Slow adoption
solutions
Solutions
  • Object oriented design
  • Use students’ advise
  • KISS
  • Go to 5th European TUG
future
Future
  • Everything OO
  • Test first, code later (XP)
  • Starsyncing
  • Cross platform
    • Linux, Mac OS X and Windows
  • Educational release
slide17
Link
  • CroCiCL project:

http:/edugate.fss.uu.nl/~crocicl/

discussion
Discussion
  • Should all extensions be stubs-enabled?
  • How do Tcl and OO mix?
  • Better name than VCRI?
  • Is it realistic to make cross-platform availability a goal?
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