D3E3 Model
The D3E3 model of design is something that I developed during my time at SCAD. It draws inspiration from various other design models that I have used in the past including the I.E.I.D. model used at S.Labs, Bruce Claxton's D.E.S.I.G.N. process & 'Creative Research' methodology by Hilary Collins.
This Methodology breaks down the design process into six stages that follow a circular flow. Each adjacent stage shares a step with the previous and acts as a milestone in the process. The model allows you to move to a previous stage, however, progression only happens in the circular flow.