A quantitative method to determine preservice chemistry teachers' perceptions of chemical representations

2017 ◽  
Vol 18 (4) ◽  
pp. 825-840 ◽  
Author(s):  
M. L. Head ◽  
K. Yoder ◽  
E. Genton ◽  
J. Sumperl

Chemical representations serve as a cornerstone to guide the teaching of chemistry concepts. The influence that a chemical representation has on instruction is largely dependent on how well the viewer interprets the information in the representation. Teachers serve as a guide to the students as they point out and make connections between the features present in a chemical representation. To influence how well the teacher serves as a guide it is important to develop teachers' pedagogical content knowledge as it relates to visualizations. As a first step towards developing this area of teaching expertise it is crucial to develop an understanding of how preservice chemistry teachers perceive a variety of chemical representations. To this end, this paper presents a novel card-sorting methodology that utilizes Johnstone's triangle as a continuum to determine how chemistry preservice teachers perceive representations relative to the presence of each of the three representational levels: macroscopic, submicroscopic, and symbolic. This study has determined that this methodology is both valid and reliable among a group of chemistry preservice teachers. The participants were able to effectively detect the presence or absence of the macroscopic domain. However, there was greater variance when the symbolic and submicroscopic levels were present. In addition, variance among the participants’ responses also increased dramatically when multiple levels were present in one representation. This was largely a result of what key features the participant focused on while viewing the card. The variance results of this study, along with the accompanying rationales for the placement of the cards, serve to inform the development of practices to further foster preservice chemistry teachers’ pedagogical-visual-content-knowledge (PVCK).

Author(s):  
Peng He ◽  
Changlong Zheng ◽  
Tingting Li

This study aims to develop and validate a new instrument for measuring chemistry teachers’ perceptions of Pedagogical Content Knowledge for teaching Chemistry Core Competencies (PCK_CCC) in the context of new Chinese chemistry curriculum reform. The five constructs and the initial 17 items in the new instrument were contextualized by the PCK pentagon model (Park S. and Oliver J. S., (2008), J. Res. Sci. Teach., 45(7), 812–834.) with the notions of the Senior High School Chemistry Curriculum Standards (Ministry of Education, P. R. China, 2017). 210 chemistry teachers from a University-Government-School initiative voluntarily participated in this study. The findings from item analysis, confirmatory factor analysis and correlation analysis provide sufficient empirical evidence to support the convergent and discriminant validity of the instrument. The concurrent validity of the instrument was confirmed by testing mean differences among teacher demographic groups. The high Cronbach's coefficient alpha values show good internal consistency reliability of the instrument. Integrating the evidence from theory and data, we documented a valid and reliable PCK_CCC instrument with five constructs consisting of 16 items. This study provides a thorough process for developing and validating instruments that address teacher perceptions of their PCK in a particular subject domain. The valid and reliable PCK_CCC instrument would be beneficial for teacher education researchers and teacher professional programs.


2020 ◽  
Vol 10 (1) ◽  
pp. 59-81
Author(s):  
Roko Vladušić ◽  
Robert Bucat ◽  
Mia Ožić

The impression that many preservice chemistry teachers demonstrate issues in the application of their pedagogical content knowledge in teaching practice, especially in the area of fundamental chemistry topics, served as motivation for changes to the Chemistry Education 2 course curriculum. In order to stimulate pedagogical content knowledge, the course has been changed in the following areas: intending learning outcomes, the language of chemistry instruction, awareness of “Johnstone’s triangle” of operations, and common alternative conceptions. To obtain evidence of preservice teachers’ in-practice pedagogical content knowledge about chemical bonding, especially pedagogical content knowledge related to the revised areas of the Chemistry Education 2 course, we designed and conducted a case study based on detailed monitoring of one preservice teacher’s pre-teaching, teaching and teaching evaluation activities. The findings demonstrate evidence of growth of the preservice teacher’s pedagogical content knowledge of chemical bonding, with particular characteristics indicating that the source of this growth is almost certainly the revised Chemistry Education 2 curriculum.


2021 ◽  
Vol 22 (2) ◽  
pp. 498-512
Author(s):  
Sinem Gencer ◽  
Huseyin Akkus

This study aims to determine the topic-specific nature of two experienced chemistry teachers’ pedagogical content knowledge (PCK) in the topics of interactions between chemical species and states of matter. The teachers’ PCK on these topics was investigated in terms of the following components: orientations toward science teaching (OST), knowledge of curriculum (KoC), knowledge of instructional strategies (KoIS), knowledge of learner (KoL), and knowledge of assessment (KoA). Data for the study were collected over five months using multiple data collection tools, including semi-structured interviews, observations, card-sorting activity, and field notes. PCK is identified in the literature as a topic-specific knowledge. Similarly, chemistry teachers’ PCKs in this study were found to be topic-specific in the topics of interactions between chemical species and states of matter. However, it was seen that some dimensions of the PCK components were not topic-specific. The results indicated that one of the participants’ OST was topic-specific, while the other's was not topic-specific. Further, it was determined that the participants focused on abstract nature in the topic of interactions between chemical species, but they focused on daily life examples in the topic of states of matter. To overcome the students’ difficulties and misconceptions, the participants highlighted abstract nature in the topic of interactions between chemical species and familiar examples in the topic of states of matter. Their KoC differed in terms of relations with other disciplines and curriculum sequence across the topics. Lastly, it was found that the participants’ KoAs consisted of general pedagogical knowledge for both topics. In the light of the results of this study, implications are stated and suggestions on improving the understanding of the topic-specific nature of PCK are provided for in-service chemistry education, pre-service chemistry teacher education, and chemistry education researchers.


Author(s):  
Mohammed Yousef Mai ◽  
Mahizer Hamzah

The integration of Information and Communications Technology (ICT) in classrooms has been a challenge for the educational systems that aim to cope with the needs and the demands of the 21st century. The TPACK framework represents the knowledge needed by teachers bringing together content knowledge, technological knowledge and pedagogical knowledge with the aim of integrating ICTs into teaching-learning processes. The aim of this study is to determine the primary science teachers’ perceptions of technological pedagogical content knowledge (TPACK) addressing teachers’ perceptions of the affordances of technology application in instruction. A total of 133 prımary science teachers in Malaysia were surveyed (Female= 67, Male= 66). Data were collected through “Technological Pedagogical and Content Knowledge” (TPACK) scale. The questionnaire consisted of 47 questions about TPACK and is based on the survey instrument developed by Schmidt et al. (2009). TPACK involving the seven factors of technological knowledge (TK), pedagogical knowledge (PK), content knowledge (CK), technological content knowledge (TCK), technological pedagogical knowledge (TPK), pedagogical content knowledge (PCK), as well as synthesized knowledge of technology, pedagogy, and content (TPC). The findings indicate that primary science teachers perceive higher self-confidence in pedagogical knowledge in general. Further, no differences between science teachers’ perceptions according to thier gender, while there are diferences between the teachers perceptions of PK, CK, and PCK accordıng to their age


Author(s):  
Elina Mäkelä ◽  
Petra Auvinen ◽  
Tero Juuti

AbstractThe paper concerns the Finnish product development teacherś perceptions on their pedagogical content knowledge in higher education settings. The aim is to describe and analyse what kind of pedagogical content knowledge the teachers have and, therefore, to provide a better understanding of the type of knowledge unique to product development teaching. The model of pedagogical content knowledge used here includes the components of product development content knowledge, pedagogical knowledge and pedagogical content knowledge. Based on seven teacher interviews, the main content knowledge concerns the process of product development, its different phases and methods as well as the usage of different software programs. The teachers use diverse teaching methods and their attitude towards educational technology is mostly positive. Course learning outcomes and working life are acknowledged when planning teaching, but only a few teachers take curriculum into account and participate in curriculum design. Even though the teachers use different evaluation methods in teaching, new ways of evaluation are needed. This may be something that innovative educational technology tools can make possible.


2018 ◽  
Vol 57 (2) ◽  
pp. 360-384 ◽  
Author(s):  
Ching Sing Chai ◽  
Joyce Hwee Ling Koh ◽  
Yiong Hwee Teo

This study proposed a new conceptualization of technological pedagogical content knowledge (TPACK) that focuses exclusively on the intersection of technology, pedagogy, and content specifically for selected dimensions of 21st century learning. In addition, teachers’ design beliefs were investigated with the teachers’ TPACK. Given the conceptualization, a new instrument was designed and validated. An associated intervention program to enhance the preservice teachers' TPACK was designed and the pre- and post-course surveys were conducted. To unpack the relationships between teachers’ design beliefs and their TPACK, structural equation models were constructed and validated. The findings indicate that the instrument possesses good construct, discriminant and convergence validity, and reliabilities. The intervention enhanced the teachers’ TPACK efficacies and their design beliefs significantly, and the structural equation models indicate that the teachers’ design beliefs are significant predictors of the teachers’ TPACK. The implications of this study suggest that TPACK may be conceived differently and this may promote new intervention programs to foster preservice teachers’ TPACK and design beliefs.


2020 ◽  
Vol 9 (1) ◽  
pp. 15
Author(s):  
Aulia Nursyifa ◽  
Imam Fitri Rahmadi ◽  
Eti Hayati

This research aims to determine the ability of the Technological Pedagogical Content Knowledge (TPACK) preservice teachers Civic education Pamulang University. The method used in this research is a quantitative method with a survey approach. The research subject amounted to 63 students. The results showed that the ability of TPACK has a very important role in improving the ability of preservice teachers in the revolution of the 4.0 industry, besides the analysis results demonstrated the ability of TPACK Preservice teachers Civic education on group A superior to the group B. Therefore, TPACK's capabilities need to be upgraded and supported by various parties to create an education that can produce future qualified teachers.


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