The concept of the art of building teacher’s skills and tools is seen as a potential for proficiency in didactic and educational activities. Individual predispositions conducive to teachers’ predictable and/or creative activities are demonstrated. R. J. Sternberg’s investment theory of creativity, which fits into the phases of teachers’ professional development, turns out to be helpful in forming their skills and tools. In each phase, both methodological models and creative solutions are sought, and as such, they are discussed by means of theoretical divagations and selected research findings.