TASK DESIGN AND MODELING

§What work will the user perform in specific circumstances?

–What tasks and subtasks will be performed as the user does the work?

–What specific problem domain objects will the user manipulate as work is performed?

–What is the sequence of work tasks—the workflow?

–What is the hierarchy of tasks?

•Use-cases define basic interaction

• Task elaboration refines interactive tasks

• Object elaboration identifies interface objects (classes)

• Workflow analysis defines how a work process is completed  when several people (and roles) are involved