Isomorphic representations

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Isomorphic representations

• Vinod Aggarwal
• Venkatesh Rudrapatna
• Week 3 Assignment

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Domain

• Virtual classrooms 
• Synonyms
• Web-based education/distance learning systems

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Virtual classroom

• Virtual classrooms are web-based systems that
  deliver educational courses. In virtual
  classrooms students develop ideas, debate issues,
  and pose questions in both synchronous and
  asynchronous discussion rooms. They also
  collaborate on research and writing projects,
  download assignments, upload homework, check the
  syllabus, read lecture material, and much more.

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Tasks under study

• Check schedule/syllabus of a particular course
• Check assignments for a particular day

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Visual distraction
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• Attention selectivity
• Brain tries to select Syllabuseyes do not see
  it
• Distracting text
• An explicit array of symbols (links/buttons/icons
  /text)

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Dimensions-LS

• LS is easy to use/learn for reaching Schedule
  but presents visual distractions. Visual
  distractions interfere with cognitive processing.
  
• It takes an uncomfortable number of mouse clicks
  to reach the target information.

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Dimensions-LS

• For reaching Assignments, one needs to navigate
  through Course Room (!). This is not intuitive,
  represents inefficient information encoding and
  needs to be memorized.
• Data entry is allowed in the form of ASCII text
  in the box provided. Retrieval of a submitted
  assignment needs to be negotiated via Course
  Room, Assignments, Students, Week n.
• Short-term (perceptual input) and working
  (generate and implement solutions) memories are
  unduly loaded.

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Dimensions-SB

• Not intuitive. Cannot easily navigate.
• Learning by trial and errorthus error prone.
• Icons and links relatively smallvisual strain.
• Manipulation/ navigation through multiple steps.
• Memorization of steps required.
• Load on working memory (recognition is usually
  better than recall).
• Data entry/ homework submission cannot paste
  text. Can only submit attachments.