Graphical Annotation Based Interactive Techniques in eTrace eLearning Environment Teodor Ştefănuţ Computer Science Department Technical University of Cluj-Napoca [email protected]Dorian Gorgan Computer Science Department Technical University of Cluj-Napoca [email protected]
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Graphical Annotation Based Interactive Techniques in eTrace eLearning Environment
Graphical Annotation Based Interactive Techniques in eTrace eLearning Environment. Teodor Ş tef ă nu ţ Computer Science Department Technical University of Cluj-Napoca [email protected]. Dorian Gorgan Computer Science Department Technical University of Cluj-Napoca - PowerPoint PPT Presentation
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"eLearning and Software for Education", BUCHAREST, April 17-18, 2008 2
Outline
Objectives
Graphical annotation techniques
Communication improvements using annotations
eTrace platform
Lessons creation and management
Experiments
Knowledge assessment
Gestures
Results
Conclusions
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Objectives – I-Trace Project
Study the requirements and specifications for graphical pen annotation based eLearning environments
User requirements (i.e. professor, students), eLearning environment functional specifications, usability requirements, lesson structure, user interaction techniques.
Adapt and integrate graphical annotation capabilities in eTrace eLearning framework
Develop eTrace eLearning environment, design and implement the client-server architecture, resource management, security, annotation model, annotation persistence.
Integrate graphical interaction techniques in teaching materialsDevelop lessons in various domains including Computer Science, Medicine, Physics, Mathematics, Algorithms, Computer Graphics.
Usability evaluation for graphics annotation techniquesDesign and produce evaluation instruments for pen and mouse based graphics annotation; Develop test cases for graphics annotation according with usability requirements and specifications.
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eTrace Platform
Experiment the annotation techniques on 2D and 3D scenes Support annotation independence against document type (text, image), format
and 3D scene description Annotation modeling User interaction techniques Annotation description and communication Synchronization between object and annotation Annotation processing and interpretation Persistence among working sessions and users Visualization Security Integration into e-learning lessons Implementation and experimentation of the annotation techniques in e-learning
applications
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eTrace – lessons creation and management
Videos
Documents
3D Objects
Sounds
Other multimediacontent
Pictures
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eTrace – Lessons Integration
Login into the system with teachers access rights
Enter the “Add lesson” section
Complete the information for lesson description: Title, section, description, lesson files in .zip format
Send the information to the server
Access the lesson
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eTrace – Graphical Annotation Based Lessons
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eTrace – Experiments and Exercises
Experiment: multiple elements contour selection
Exercises:
Identify bullets groups Analyze the text above
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eTrace – Experiments and Exercises
Experiment: single element selection
Presentation:
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eTrace – Experiments and Exercises
Experiment: handwriting
Exercises:
Please indicate the following elements: access and emergency exit doors, flaps, fuselage
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eTrace – Knowledge assessment
Visual evaluation Made by the teacher
Based on grades
Can be applied for every annotation
Subjectivity
Time demanding for the teacher
Inefficient and limitative for a high scale e-Learning application
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eTrace – Knowledge assessment
Automatic evaluation Automatically made by
the system
Instant evaluations can be implemented
Subjectivity is eliminated
Recommended for global e-Learning systems
Can be done by comparing annotation made by students with a model annotation
Not suitable for all annotation techniques
Automatically verify that redline is inside the yellow contour and as near as possible to the points P1…Pn
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Experiments - Exercises
Other exercises (17): http://users.utcluj.ro/~gorgan/res/cgis/itrace/
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Measurements
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Conclusions
Free forms of expression
New types of questions and answers in the eLearning applications
Visual free form answer provides support for creativity, flexibility, imagination, and artistic ability
Annotation based interaction techniques must be designed according with the characteristics of each interaction device
The assessment of the annotation quality has a significant impact on the quality of the answer
Automatically evaluation of the annotation based answer
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Future work
Usability of the 3D annotation techniques
Develop automatically techniques for knowledge assessment in graphics annotation based lessons
Multi user sessions
Real time communication
Develop graphics annotation lessons in various domains
Propose technical specifications for standards concerning with