This paper introduces a model of framing in design. The model takes into account a reflective nature of designing, and it is based on the interplay between two conceptually distinct knowledge sources – an explicit specification of a problem and a solution to it. The approach is novel in the former investigated aspect that is presented as a semi-formal operation of framing, i.e. interpretation of a problem using selected conceptual primitives. We argue that the interpretation of design problems lacks a similar rigorous investigation as problem solving received in both design theory and methodology. Furthermore, two design schemas of frame refinement and problem re-framing are discussed and exemplified
