This chapter presents a detailed analysis of the actual, rather than theorised, relationship between cognitive activities and creativity in design. Focussing on parametric design, the chapter uses protocol data developed from four cognitive activities—changing parameters, perceiving geometries, introducing algorithmic ideas, and evaluating geometries—to investigate creative problem-solving processes. This analysis of parametric design activities and their sequential patterns not only informs a better understanding of process-based creativity but also identifies two important creative micro-processes in parametric design. Through this analysis, this chapter contributes to the evolution of new knowledge about the relationship between design and creativity.