Developing Science Teachers’ Pedagogical Content Knowledge
This article discusses the concept of pedagogical content knowledge (PCK) within the context
of science teaching. First, an attempt is made to define this concept within the tradition of research on
teachers’ craft knowledge and to identify possible purposes of research on PCK. From this point of view,
recent research on science teaching is investigated. This investigation identifies teaching experience as the
major source of PCK, whereas adequate subject-matter knowledge appears to be a prerequisite. Finally, an
empirical study is presented which focuses on PCK with respect to a specific topic—that is, chemical equilibrium.
The effects on teachers’ PCK of participation in an in-service workshop and conducting an experimental
course in classroom practice are reported. This leads to the identification of elements of PCK
teachers can use to promote student understanding. It is concluded that research on topic-related PCK may
complement research on student learning of specific topics.