So I wiggle the key, then try taking it out and putting it back in. Still locked. Hm, something bigger might be wrong, look up and realize this isn’t my car. 29
Good user interfaces help the user develop a good mental model of the system 30
Another way is to support the construction of a mental model.
Package tracking application on first us e
State diagrams 33
Today’s challenge: Microwave app We are going to have a running example today of a microwave Start with microwaves themselves Move on to apps 34
Today’s challenge: Microwave app We are going to have a running example today of a 35 Start Done Set time Set cooking mode Cooking Sound “Bing” Door open button pressed