Sevgi Aydin

The analysis of the changes in integration of nature of science into Turkish high school chemistry textbooks: is there any development?

To attain the goal of scientific literacy, the nature of science (NOS) is one of the areas that should be addressed. In many countries, the training of scientifically literate generations is a fundamental aim of science education, as a result there is an emphasis on NOS in science curricula and curricular materials. Textbooks prepared to teach curricula should incorporate aspects of NOS for all grades. In Turkey, the secondary science curricula were reformed in 2013. In this document analysis, aspects of NOS were included, the approach adopted for integrating aspects of NOS (i.e., explicit-reflective, implicit, and historical), and content-embeddedness of integration were analyzed in the reform-based and old high school chemistry textbooks published and provided by the National Ministry of Education. The results revealed that from the 9th to the 12th grade, the number of NOS aspects mentioned in the textbooks decreased. The most frequently cited aspects were the tentative nature of scientific knowledge, the empirical basis of science, and the difference between observation and inference. However, models in science, creativity and imagination were NOS aspects that were overlooked. Regarding the approach, contrary to the suggestion of the literature, the implicit approach was employed frequently. Finally, NOS aspects were provided in a content-embedded way in the 9th and 10th grades whereas they were presented mostly in a content-generic way in the 12th grade. Only the 9th grade textbook provided two NOS activities for teaching NOS. Although some changes have been made regarding teaching NOS, some important parts are missing. In light of the results, we suggest that all NOS aspects should be integrated into textbooks in an explicit-reflective way. Additionally, for teaching NOS, explicit-reflective activities should be offered in textbooks.

Professional Journals as a Source of PCK for Teaching Nature of Science: An Examination of Articles Published in The Science Teacher (TST) (an NSTA Journal), 1995-2010

A number of science education policy documents recommend that students develop an understanding of the enterprise of science and the nature of science (NOS). Despite this emphasis, there is still a gap between policy and practice. Teacher professional literature provides one potential venue for bridging this gap, by providing “activities that work” (Appleton in elementary science teacher education: International perspectives on contemporary issues and practice. Lawrence Erlbaum Associates, Mahwah, NJ, 2006) that can scaffold teachers’ developing pedagogical content knowledge (PCK) for teaching NOS. We analyzed articles published in the NSTA journal The Science Teacher (1995–2010) in terms of the degree to which they provide appropriate model activities and specific information that can support the development of teachers’ PCK for teaching NOS. Our analysis revealed a diversity of NOS aspects addressed by the authors and a wide range of variation in the percent of articles focused on each aspect. Additionally, we found that few articles provided robust information related to all the component knowledge bases of PCK for NOS. In particular, within the extant practitioner literature, there are few models for teaching the aspects of NOS, such as the function and nature of scientific theory. Furthermore, though articles provided information relevant to informing teachers’ knowledge of instructional strategies for NOS, relevant information to inform teachers’ knowledge of assessment in this regard was lacking. We provide recommendations for ways in which the practitioner literature may support teachers’ teaching of NOS through more robust attention to the types of knowledge research indicates are needed in order to teaching NOS effectively.

A science faculty's transformation of nature of science understanding into his teaching graduate level chemistry course

This is an interpretive case study to examine the teaching of an experienced science faculty who had a strong interest in teaching undergraduate and graduate science courses and nature of science specifically. It was interested in how he transformed knowledge from his experience as a scientist and his ideas about nature of science into forms accessible to his students. Data included observations (through the 12-week semester) and field notes, Views of Nature of Science-Form B, as well as semi-structured interview. Deductive analysis based on existing codes and categories was applied. Results revealed that robust SMK and interest in nature of science helped him address the different nature of science aspects, and produce original content-embedded examples for teaching nature of science. Although he was able to include nature of science as a part of a graduate course and to address nature of science myths that graduate students had, nature of science assessment was missing in his teaching. When subject matter knowledge and nature of science understanding support each other, it may be a key element in successful nature of science learning and teaching. Similar to science teachers, the development of assessment of nature of science may take more time than the development of other components of instruction (i.e., instructional strategy) for science faculties. Hence, this result may be an indication of the specific need for support to develop this component of teaching.

Bilimin Doğası’nın Ortaöğretim Fizik, Kimya ve Biyoloji Yeni Öğretim Programlarında Yansıtılması

One of the important objectives of science education is to have scientifically literate society. Nature of science (NOS) is one of the aspects for raising scientifically literate individuals. In light of this aim, the analysis of new secondary science (physics, chemistry and biology curricula for 9-12 grades, 12 documents in total) curricula would provide valuable information both to related literature, the program developers, and textbook writers. With this aim in mind, in this research the objectives in the new secondary science curricula prepared in 2013 (biology, physics, and chemistry) were analyzed regarding how and to what extend the objectives reflected NOS. In this document analysis study, research group coded the all objectives in the curricula and realized that the number of the objectives highlighted NOS was inadequate. Additionally, some aspects of NOS (imagination and creativity in Science) were ignored. Implications were suggested with help of the results.