Volume 42, Issue 7 p. 767-790
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Growing the tree of teacher knowledge: Ten years of learning to teach elementary science

Judith Mulholland

Corresponding Author

Judith Mulholland

Australian Catholic University, Brisbane Campus, P.O. Box 456, Banyo, Queensland 4041, Australia

Australian Catholic University, Brisbane Campus, P.O. Box 456, Banyo, Queensland 4041, Australia.Search for more papers by this author
John Wallace

John Wallace

Curtin University of Technology, G.P.O. Box U1987, Perth, Western Australia 6485, Australia

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First published: 25 April 2005
Citations: 69

Abstract

Pedagogical content knowledge (PCK) is a much debated and studied construct. In this article, we adopt an all-embracing view of PCK to examine the development of one elementary science teacher's knowledge over a 10-year period. We portray this teacher's knowledge at three critical points in her career—as a student teacher, beginning teacher, and established teacher—and represent and analyze the growth of her science PCK using the metaphor of a knowledge tree. The tree metaphor shows that while science knowledge begins as the major branch of science PCK, it is soon overshadowed by the general teaching and interactive knowledge branches of science PCK; however, taken together, all three branches contribute over time to the formation of a healthy, established tree of science PCK. © 2005 Wiley Periodicals, Inc. J Res Sci Teach 42: 767–790, 2005

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