Consolidating Sequence Models

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Slide 9 of 12

Consolidating Sequence Models

Reveal common activities, goals, and strategies
How-To

Identify common activities and match triggers
Write an abstract step that states the work done
Match sequence activities and write abstract steps


Abstract step	U5	U4
Go to the place where the problem can be solved (physically or logically	Log onto failing system to search for problem	Go into lab to look at equipment
Figure 9.11 Going to deal with a a problem pg 173

Step back through the consolidated sequence model and list the intent of each step or sequence


Abstract step	U5	U4
Trigger: Find out about problem Automated procedure Someone reports problem	Trigger: Watcher sends mail that the All-in-1 (A1) mail system isn't working	Trigger: Person walks into office to report problem; can’t access files on another machine
Figure 9.10 Alternate triggers pg 174

Beyer & Holtzblat (1998), Contextual Design, Morgan Kaufmann, Pages: 173, 174