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Sketches, Drawings, Diagrams, Physical Models, Prototypes, and Gesture as Representational Forms

What is the role of physicality when interacting with different representations? Representational forms differ in type of representation (e.g. sketch, diagram, 3D model) and in the way they are materialized. These variations influence the properties of a representation and suggest or enable different usages, interaction styles and variations in meaning, even if they represent the same object, idea or concept. Here we present a literature survey summarizing knowledge about the properties of representational forms such as sketches, drawings, diagrams, physical models, and also of gesture.