A model of CS teachers' knowledge growth

Our poster suggests a spiral model of CS teachers' knowledge growth in laboratory sessions, based on Shulman's model of pedagogical reasoning. Our proposed spiral model deals with much smaller units of time, e.g. a session or a part of a session in class, and with small units of knowledge. It is based on observations in laboratory sessions of regressed experts in the first, second and third time they taught inheritance and polymorphism, as well as on interviews with them.