Human-Computer Interaction 3e Dix, Finlay, Abowd, Beale
Look again at the tea making task analysis in Chapter 15 (figure 15.4). Go through this and look for triggers and placeholders. You will need to make assumptions (e.g. is the kettle the kind that whistles when it boils?) so document these.
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Other exercises in this chapter
ex.18.1 (ans), ex.18.2 (tut), ex.18.3 (tut), ex.18.4 (tut)
all exercises for this chapter