Sequence Model in Contextual Design
Work Model in the Contextual Design method
Sequence, showing the detailed work steps necessary to achieve intent. Sequence models can reveal alternate strategies to achieve the same intent.
Sequence models show design intent and the workflow models show how these intents are achieved (strategies for organising work)
The sequence models are complemented by the artefacts models to show how the design artefact is manipulated and with what tools. They also help to reveal the design intent and how the team, groups and persons think about their work.