A new instrument for measuring pre-service biology teachers' pedagogical content knowledge: The PCK-IBI

Großschedl, Jörg, Welter, Virginia and Harms, Ute (2018) A new instrument for measuring pre-service biology teachers' pedagogical content knowledge: The PCK-IBI Journal of Research in Science Teaching . DOI 10.1002/tea.21482.

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Teachers' pedagogical content knowledge (PCK) is highly important for effective design and implementation of school teaching. Thus, the current status, development and efficacy of this knowledge, its relationships with teaching quality parameters, and its impact on students' learning processes and success, require rigorous examination. Thoroughly validated, objective and reliable test instruments that are highly sensitive to changes in variables of proven knowledge‐related relevance in teacher education are also required. Previous attempts to design such instruments for assessing science teachers' PCK have largely focused on mathematical content. Therefore, here we present an instrument (the pedagogical content knowledge in biology inventory, PCK‐IBI), based on conceptualizations of teachers' professional competence, for assessing secondary school pre‐service biology teachers' PCK. In a series of three evaluations and refinements it was tested with samples of N = 274 and N = 432 German pre‐service as well as one sample of n = 65 German pre‐service and n = 35 German in‐service biology teachers. Item analysis, scale analysis and empirically obtained indicators of validity suggest that the final 34‐item‐version of the PCK‐IBI is unidimensional, provides objective test scores and enables reliable and valid registration of pre‐service biology teachers' PCK. Thus, hypotheses regarding specific aspects of the model on which the PCK‐IBI's construction is based on are empirically supported. The results of our study provide empirical support for the instrument's potential utility.

Document Type: Article
Research affiliation: Kiel University > Kiel Marine Science
OceanRep > The Future Ocean - Cluster of Excellence
Kiel University
Refereed: Yes
DOI etc.: 10.1002/tea.21482
ISSN: 00224308
Projects: Future Ocean
Date Deposited: 16 Jan 2019 11:01
Last Modified: 17 Jan 2019 09:20
URI: http://eprints.uni-kiel.de/id/eprint/45377

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