A model for addressing navigation limitations and metacognitive constraints in hypermedia training systems is presented in the form of the viewgraphs. The following subject areas are covered: samples of software and people problems; system design; and hypermedia training system

Freedman, Glenn B.

English

NASA Technical Reports Server

l_ / N91-21945
A Model for Addressing Navigation Limitations and
Metacognitive Constraints
in Hypermedia Training Systems
Dr. Glenn Freedman
University of Houston - Clear Lake
December 1990
The Problem
Hypermedla training tools still suffer from limited navigational
systems.
Hypermedla users are constrained by their own metacognitlve
limitations, schema, lack of knowledge about the developer's
schema, and limitations of linking (associational) systems.
The Result
Hypermedla training systems ere often difficult to use, to gain
optimal value from, end can be downright confusing, unless a
person already knows the system, the developer, or the
content.
https://ntrs.nasa.gov/search.jsp?R=19910012632 2020-03-19T19:00:41+00:00Z
Sample of Software Problems
1. Difficult to browse through the eystem
2. Difficult to sesmiesely link medie types
3. Too few smmcietionsl options
I FILTERING, ORGANI2]NG, BROWSING (CONKUN. 1987)
Sample of People Problems
1. Easily confused - lack of cognitive 'gravity'
2. Too hard to remember everything -- can't hold one's
place
3. Too many choicee
4. Too much Information in too many formats
HyDermedia in Traininq
Overviews
end
The Three Biggest Challenges
System Design
System Design
System Design
What Are We Designing?
1. A Database System
2. A Knowledge Representation Schema
3. A Hypertaxt System
4. An Instructional System
5. An Interface System
6. A Layered Layout
7. Graphics
8. An Evaluative System
9. A Search and Find System
10. A Model for Teaching
11. A Model for learning
Stronq Training System
Confirmability
Abstraction
L ocallzation
C omplotonoss
nformation hiding
Uniformtty
M odularity
Attributes of a Well Desiqned System
S afaty and ucurlty M odiflabillty
U nderltandabillty I nteroperablllty
P ortabillty C orrectnelm
E fficlency E xtensibillty
R ellablllty
A Desiqn Worksheet
Instructional Goal:
Instructional Objectives:
Target Population:
Setting:
Hardware/Software Requirements:
Time Boundaries:
Proficiency Level:
Prerequisites:
Follow-up:
Node Varieties:
Link Associations:
Level of Abstraction:
Establishinq a
Universe of Discourse
1. Spatial Frames of Reference
2. Temporal Frames of Reference
3. Shared Domains; Coreference
4. Points of Departure
5. New Information
6. Coaching and Mentoring
7. Free Indirect Style
8. Presupposltlons
9. Lexicons
10. Rules
lO
H Summary:
yDermedla Traininq System_
Addressing the Metacognitlve Issues:
Training for the tralnlngl
Addressing the Navigation Problems:
From Landsst to Anffarms!
Addressing the Communications Problems:
Back to the Basicsf
11
Session 3
Issues for Real-World
Hypertext Projects
Chair: Robert J. Glushko
Panel: Three Issues for Real-World
Hypertext Projects
Robert J. Glushko
David Gunning
Bruce Warren



A model for addressing navigation limitations and metacognitive constraints in hypermedia training systems

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