$($a$)$ Effective interaction design involves achieving a balance between

divergent and convergent design thinking. These two design phases are

integrated in a number of design models. Select one of these models and use

it to elaborate on these different design activities using the example of the

development of a book club application to illustrate your answer.

$(10)$

$($b$)$ You have been tasked with undertaking a redesign of the university$$s

website. Prepare an outline evaluation plan for this project clearly outlining the

goals and activities $($when$,$ how and by whom the evaluation activities will be

undertaken, for the system$)$ involved in the evaluation.

$(6)$

$($c$)$ What is the purpose of error messages in an interactive application? What

factors are important in their design? Illustrate your response with examples of

a well$-$designed and poorly$-$designed error message.