Friday, 31 October 2008

Graphics for Learning

Here is a summary of guidelines for using graphics to teach the most common content types: procedures, concepts, facts, processes, and principles.

Procedure

Tasks that involve the same steps each time they are performed. E.g. accessing email, completing a routine customer order.

  • Provide demonstrations that reflect the work environment
  • Show activity flow from the performer's perspective in the job environment
  • Manage cognitive overload when procedures are complex
    • Use audio and visual cues, place text close to visuals, and eliminate extraneous detail
  • Use visuals to draw attention to and illustrate warnings
  • Support visuals with text to provide directions, feedback, and memory support

Concept

Supporting knowledge that involves a category of objects, events, or ideas usually designated by a single word. E.g. integrity.

  • Display two ore more representational graphics contiguous to each other and to text definitions
  • Create counterexamples
    • E.g. examples of formatted and non-formatted web pages
  • Use analogies especially for more abstract or unfamiliar concepts
    • E.g. a mail analogy for the functions of the Internet OSI layers
  • Display related concepts together
  • Use organisational graphics to illustrate related concepts
  • Promote learner engagement with concept visuals

Fact

Supporting knowledge that designates unique, specific content about objects, events, or people. E.g. specific log-on codes, order entry screen, product specifications.

  • Us representational visuals to show concrete facts
  • Display factual data where it can easily be seen
  • Use organisational visuals to display multiple discrete facts
  • Use mnemonic visuals when facts must be recalled
    • E.g. Tenador = Spanish for fork: show 10 forks stuck in a door.
  • Use relational visuals to support discovery of relationships or trends
  • Engage learners with factual visuals by including them in practice

Process

Supporting knowledge that describes state changes about how a system works. E.g. the performance appraisal process.

  • Use transformational visuals such as flow diagrams and animations that show state changes in the process
  • Manage load by teaching system components first, providing words in audio format, and using attention-focusing strategies (such as arrows, colour, and/or a zoom effect)
  • Use interpretative visuals such as schematics to represent abstract processes
  • Promote engagement with process visuals to help learners build a cause-and-effect model of the system

Principle

A comprehensive law that includes predictive relationships; tasks that require workers to adapt to unique situations. E.g. making a sale, writing a report.

  • Use representational visuals of the job environment
  • Use design devices to manage cognitive load
    • E.g. use a PC, telephone, and filing cabinet in a virtual office to store information and data for later review
  • Assign analysis of video-taped cases to promote learning principles that involve high degrees of interpersonal activity
  • Engage learners with explanatory visuals including visual simulations and static interpretative visuals to build rich mental models that underlie the principles

Ref: Graphics for Learning, by Ruth Clark & Chopeta Lyons

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