This study explores how elementary teachers and students use hedges (tentative words such as "maybe") and boosters (expressions of certainty such as "clearly" and "obviously") during science inquiry discussions. Drawing upon semiotic theory, we examine explicit thematic patterns (semantic meaning relations among science concepts) as well as hidden…

Although teacher educators have achieved some success in improving teachers' understanding of the nature of science (NOS), helping teachers teach NOS has proved a much greater challenge. Currently, there are few examples in the literature of teachers who effectively teach NOS, and fewer still that rely on student outcomes as a measure of teachers'…

This study explores the development of professional identity as a teacher of nature of science (NOS). Our research question was "How can a teacher develop a professional identity as an elementary teacher of NOS?" Through a researcher log, videotaped lessons, and collection of student work, we were able to track efforts in teaching NOS as…

This study explored "To what extent will preservice teachers with adequate nature of science (NOS) conceptions and who participate in a community supporting NOS instruction teach NOS in their internship settings?" Using a combination of focus group discussions and peer feedback, five preservice teachers met with university personnel bi-monthly…

Teacher education programs have met with limited success in improving teachers' understanding of the nature of science (NOS). Research suggests that such efforts could be enhanced by addressing NOS in preservice teachers' science courses. We planned NOS instruction in a physical science content course for preservice elementary teachers. Our first…

Though research has shown that students do not have adequate understandings of nature of science (NOS) by the time they exit high school, there is also evidence that they have not received NOS instruction that would enable them to develop such understandings. How early is "too early" to teach and learn NOS? Are students, particularly young…

In this study we examine how elementary teachers in Brazil and Turkey approached the translation and subsequent classroom implementation of an instructional activity that promotes environmental awareness through a combination of student role playing and teacher oral delivery of an environmental story about river pollution. A discourse analysis…

We would like to thank our commentators Reis, Ercikan and Alper for their insightful comments on our research study and respond in brief to a few of their criticisms. More specifically, we would like to address what we consider to be the three main issues they raise with regard to the practices of curriculum translation and implementation across…

This study explored the nature of the relationship between a fifth-grade teacher and an informal science educator as they planned and implemented a life science unit in the classroom, and sought to define this relationship in order to gain insight into the roles of each educator. In addition, student learning as a result of instruction was…

The purpose of this study was to explore the relationship of learner characteristics and preservice teachers' views of nature of science (NOS) prior to formal instruction. Learner characteristics investigated included metacognitive awareness, self-efficacy, attitudes toward science teaching, Perry's intellectual and ethical developmental levels,…

This study explored preservice teachers' views of their own cultural values, the cultural values they believed scientists hold, and the relationships of these views to their conceptions of nature of science (NOS). Parallel assignments in a foundations of early childhood education and a science methods course required preservice teachers to explore…

This study assessed, and identified factors in participants' learning ecologies that mediated, the effectiveness of an explicit reflective instructional approach that satisfied conditions for learning as conceptual change on preservice elementary teachers' views of nature of science (NOS). Participants were 28 undergraduate students enrolled in an…

We explored adaptations to an elementary science methods course to determine how varied contexts could improve elementary preservice teachers' conceptions of NOS as well as their ideas for teaching NOS to elementary students. The contexts were (a) NOS Theme in which the course focused on the teaching of science through the consistent teaching…

This study explored relationships between preservice early childhood teachers' views of nature of science (NOS), cognitive developmental levels, and their cultural values. Using the Views of Nature of Science Questionnaire (VNOS-B) and interviews, we assessed views of NOS. The Learning Context Questionnaire (LCQ) was used to determine the…

There have been substantial reform efforts in science education to improve students' understandings of science and its processes and provide continual support for students becoming scientifically literate (AAAS, "Benchmarks for science literacy," Oxford University Press, New York, 1993; NRC, National Academy Press, Washington, DC, 1996; NSTA,…