The paper describes the author's experience in using the history of science in teaching physics to science teachers. lt was found that history becomes more useful to teachers when explicitly combined with 'investigative' experimentation, which, in turn. can benefit from various uses of the history of science.

This paper discusses a way of introducing a scientific controversy, which emphasizes objective aspects of such issues as multiple theoretical interpretation of phenomena, choosing a theory, insistence on the chosen theory, and others. The goal is to give students a better insight into the workings of science and provide guidelines for building theories in their own research.

Discussing theories at length, including their origin, development, and replacement by other theories, can help students in understanding of both objective and subjective aspects of the scientific process. Presenting theories in the form of- models helps in this undertaking, and the history of science provides a number of suitable models. The paper describes specific examples that have been used in in-service courses for science teachers.