caa a22 4500 44588200X CHVBK 20180317145546.0 cr unu---uuuuu 170323e20110301xx s 000 0 eng 10.1007/s10649-010-9276-z doi (NATIONALLICENCE)springer-10.1007/s10649-010-9276-z Using Delphi methodology to design assessments of teachers' pedagogical content knowledge [Elektronische Daten] [Agida Manizade, Marguerite Mason] Descriptions of methodologies that can be used to create items for assessing teachers' professionally situated knowledge are lacking in mathematics education research literature. In this study, researchers described and used the Delphi method to design an instrument to measure teachers' pedagogical content knowledge. The instrument focused on a specific area of middle school geometry and measurement, decomposing and recomposing figures in 1-D and 2-D. The Delphi methodology used included three rounds of surveys of a diverse panel of 20 experts. The data analysis and data collection were done reflectively. Initial items were developed based on the research literature in the field of geometry education and teacher knowledge. New categories for the analysis emerged from the data and were used to complete the analysis. Consensus among the experts was reached after the third round of surveys, producing the assessment instrument. The researchers described strengths and limitations of this methodology for designing assessment tools of teachers' knowledge. The researchers suggested that Delphi methodology could also be used to design and validate broader instruments related to other types of professional knowledge of teachers in different fields. Springer Science+Business Media B.V., 2010 Teachers' knowledge nationallicence Pedagogical content knowledge nationallicence Delphi method nationallicence Assessment of PCK nationallicence Manizade Agida Radford University, Radford, VA, USA aut Mason Marguerite The College of William and Mary, Williamsburg, VA, USA aut Educational Studies in Mathematics Springer Netherlands 76/2(2011-03-01), 183-207 0013-1954 76:2<183 2011 76 10649 https://doi.org/10.1007/s10649-010-9276-z text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10649-010-9276-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Manizade Agida Radford University, Radford, VA, USA aut NATIONALLICENCE 700 1- Mason Marguerite The College of William and Mary, Williamsburg, VA, USA aut NATIONALLICENCE 773 0- Educational Studies in Mathematics Springer Netherlands 76/2(2011-03-01), 183-207 0013-1954 76:2<183 2011 76 10649 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer