As the adoption rate of the Next Generation Science Standards (NGSS) continues to rise in the United States, there is an increasing need for the development of high-quality instructional materials that reflect NGSS and effectively prepare teachers for its implementation. The NGSS aim to foster an understanding of three interconnected dimensions in…

Despite agreement among teacher educators, scholars, and policymakers on the importance of teachers' subject matter knowledge (SMK), existing models provide limited information about the nature of this foundational component of teacher knowledge. The common assumption is that teachers need to know more about the science subject matter than their…

Initial plans for this project arose from a need to address issues of professional development of science and technology teachers that went beyond the norm available within school board settings. Two teams of 4 teachers responded to an invitation to participate in a collaborative action research project. Collaborative action research was chosen in…

In an exploratory study, 36 South African physical science teachers' understanding of basic concepts concerning electric and magnetic fields was studied from a perspective of possible concept confusion. Concept confusion is said to occur when features of one concept are incorrectly attributed to a different concept, in the case of this study to…

[This paper is part of the Focused Collection on Astronomy Education Research.] We examined teachers' spatial-scientific reasoning and the alternative conceptions they held regarding Earth-space content. While participating in a professional development (PD) workshop, teachers engaged in an integrated mathematics and science project-based unit…

Using a case study method, the experiences of a group of high school science teachers participating in a unique professional development method involving an argue-to-learn intervention were examined. The participants (N = 42) represented 25 different high schools from a large urban school district in the southwestern United States. Data sources…

There is evidence that science teachers give naive responses to direct questions about the nature of science. However, there is also evidence that such responses underpredict the more sophisticated knowledge that teachers may use in classroom situations. The purpose of this study was to characterize the informal ideas used by teachers in…

This study aimed at identifying prospective chemistry teachers' misconceptions of colligative properties. In order to fulfill this aim, a diagnostic test composed of four open-ended questions was used. The test was administered to seventy-eight prospective chemistry teachers just before qualifying to teaching in secondary schools. Nine different…

An adequate understanding of the nature of science (NOS) is essential for science teachers. The Myths of Science Questionnaire (MOSQ) consisting of 14 items, which comprised both optional and written types of response, was utilized to explore 113 Thai preservice and 101 inservice science teachers' understanding and reasoning about the NOS,…

This study investigated the journey of four Thai pre-service chemistry teachers as they sought to develop their Pedagogical Content Knowledge (PCK) throughout a PCK-based chemistry methods course and field experience. In an interpretive case study approach we drew upon classroom observations, semi-structured interviews, chemistry content knowledge…

Mentoring is often an important component of alternative certification programs, yet little is known about what novices learn about science teaching through mentoring relationships. This study investigated the advice given by two mentor science teachers to their proteges. Findings indicate that mentors gave more advice related to general…

This investigation was guided by the following research questions: (1) how do teachers' understandings of the nature of science influence classroom practice?; and (2) what factors facilitate or impede the influence of teachers' understandings on classroom practice? An in-depth, year long assessment of the classroom practices and goals of five…

Delineates factors which facilitate or impede the relationship between classroom practices and teachers' understanding of the nature of science. Finds that teachers' conceptions of science do not necessarily influence classroom practice, though teachers' level of experience, intentions and perceptions of students were critically influential on…

Explores factors related to preservice teachers' capacity to understand the learning cycle. Finds that understanding of the learning cycle was related to science teaching outcome expectancy, not to personal science teaching efficacy or to attitudes toward science. (Contains 32 references.) (Author/WRM)

The superposition principle is used to explain many phenomena in physics. Incomplete knowledge about this topic at a basic level leads to physics students having problems in the future. As long as prospective physics teachers have difficulties in the subject, it is inevitable that high school students will have the same difficulties. The aim of…