Functional Design II

It is called "functional design" because it employs layers, and layers correspond with functions of the artifact being designed. I propose that instructional designs have layers that correspond to:

• the representation function (provide sensory experience for the learner)
  
• the control function (give the learner a way to respond to the sensory experience)
  
• the message function (construct the individual messages of the instructional conversation--the ones that are to be represented)
  
• the strategy function (determine high-level strategic moves that support learning and drive messaging)
  
• the content function (supply content in appropriate form to the strategic, messaging and representation functions)
  
• media-logic (execute all functions)
  
• the data management (record data from the instructional encounter).