Abstract
Models are commonly used by people engaged in understanding and changing organisations. Despite benefits resulting from this type of model work, there are a number of difficulties experienced. Instead of facilitating it, the development work is often hindered by people’s different preferences and the multitude of different model types available. A conceptual framework of model work is presented in this chapter, drawing on theories of signs, learning, and knowledge. The framework highlights differences and alternatives within three areas: model artefacts, model activities, and model assumptions. It is suggested that recognising and exploring a larger part of the framework will facilitate the development work.