May 1997
Intermediate to advanced
20 pages
48m
English
ISD models dating back to World War II depict sequential but interactive phases. Recent models, however, emphasize interactivity and de-emphasize sequence, so that course design may begin before all analyses are complete; development may fill in completed parts of a design while other parts still are unfinished; and the trainer may improve a course—update its information content or refine its evaluation techniques—during any phase, or even after the course has begun.
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