ABSTRACT
Two Kinds of Th eory: Instructional and instructional-design• Design Th eory: Applies across all domains of design• Domain Th eory: Is particular to a domain of design, e.g. instruction• A basis for the design theory/domain theory distinction: multiple categories • of engineering design knowledge Design instrumentalities and instructional design theory (functional decom-• position versus process decomposition)
Design Layering by Functional Decomposition
Employed in numerous design fi elds, including architecture, computer and • soft ware design, multimedia design, and others Being aware of layers allows us to design for dynamic and changing con-• texts.
