Science & Education最新文献

Numerous studies have shown that teaching the history and philosophy of science (POS) can help improve senior high school students’ scientific literacy. The history of science is usually taught in school science lessons by reference to particular cases, experiments, and scientists. In contrast, the POS — that is, the study of general and fundamental questions regarding the nature of science (NOS) — is often embedded within lessons, is considered difficult to teach, and is sometimes hidden from students. This research analyses the overlap between the conceptualisations of the NOS and the POS. The paper also reports on a study that used “explicit” pedagogical methods to teach topics related to the POS to Chinese senior high school students. The empirical results, which are supported by a theoretical framework that adopts the family resemblance approach to the NOS, show that students who participated in this POS course significantly improved their scientific literacy and their understanding of the relationships among science, technology, and society. The POS topics in this course helped students better understand the cognitive-epistemic system in the NOS. The findings of this small-scale study have broader implications for the way in which the POS is taught in high school education.

Studies on the quality of nature of science (NOS) representations in school science textbooks report them being mostly of implicit manner and not fully adequate. However, the often underlying NOS framework of the consensus list in these studies is criticized as undifferentiated and inadequate. The family resemblance approach (FRA) to NOS shows potential to give differentiated insights into the appropriateness of NOS representations with avoidance of specifying certain philosophical directions. Based on a fine-grained differentiated FRA category system (11 main categories, e.g., “knowledge”; 52 subcategories, e.g., “hypotheses”), the quality of cognitive-epistemic NOS representations identified in seven biology school textbooks from Germany was analyzed. For this, a category system was developed. Cognitive-epistemic NOS representations in four chapters of each of the seven textbooks were evaluated regarding manner (implicit, explicit) and adequacy (adequate, (partly) not adequate). Results indicate, among others, that explicit representations of the cognitive-epistemic system of science were mainly placed in the introduction chapters, whereas subject-related chapters include mostly implicit representations. In this article, we present the evaluation of the quality of cognitive-epistemic NOS representations and discuss implications for science education.

Among the relevant aspects of the family resemblance approach (FRA), our study focuses on the potential of the approach to elaborate on disciplinary identities in an interdisciplinary context, specifically regarding the interplay between physics and mathematics. We present and discuss how the FRA wheel can be used and intertwined with the framework of boundary objects and boundary crossing mechanisms (Akkerman & Bakker, Review of Educational Research, 81, 132–169, 2011), which is well-known in STEM education for dealing with interdisciplinarity. The role of the FRA discussed in the article is dual: both practical and theoretical. It is practical in that we show how its use, in combination with the Akkerman and Bakker framework, appears effective in fostering productive discussions among prospective teachers on disciplinary identities and interdisciplinarity in historical cases. It is theoretical in that the combination of the two frameworks provides the vocabulary to characterise the ‘ambiguous nature’ of interdisciplinarity: like boundaries, interdisciplinarity both separates disciplines, making their identities emerge, and connects them, fostering mechanisms of crossing and transgressing the boundaries. This empirical study reveals how the theoretical elaboration took advantage of the prospective teachers’ contributions. We initially presented the FRA to characterise disciplinary identities, but the prospective teachers highlighted its potential to characterise also the boundary zone and the dialogue between physics and mathematics. The data analysis showed that the combinination of the two frameworks shaped a complex learning space where there was room for very different epistemic demands of the prospective teachers: from those who feel better within the identity cores of the disciplines, to those who like to inhabit the boundary zone and others who like to re-shape boundary spaces and move dynamically across them.

The French natural philosopher Henri Victor Regnault (1810–1878) was one of many researchers who contributed to the development of the thermometer in the 19th century. In this paper, we use an example from Regnault’s work to explore how the history of thermometry can provide a context for teaching upper-secondary chemistry students about the nature of science (NOS), particularly its aims and values. The study takes form as a hermeneutical spiral, wherein literature on the history and philosophy of science, NOS, the family resemblance approach (FRA), NOS teaching, characteristics of narratives, and the new performative paradigm feed into the spiral, along with input from an empirical study. A teaching unit (n = 21, duration = 90 min) was developed and tested on Norwegian students aged 17–18 years, and a thematic analysis of students’ statements (n = 13) was carried out. The students identified “being first,” “usefulness,” “accuracy,” and “minimalism” as values and aims that guided Regnault’s work. We argue that the use of this particular historical episode framed within FRA (1) invited students to identify with the human actor—Regnault, (2) invited students into the historical context of the development of the thermometer, and (3) demonstrated complexity and provided context to support students’ own construction of their understanding of NOS. To summarize, by deriving the term “research with” from the performative paradigm and using the context of the historical episode related to the thermometer within the FRA framework students were invited to research with Henri Regnault.

Nine years after reconceptualizing the nature of science for science education using the family resemblance approach (FRA) (Erduran & Dagher, 2014a), the time is ripe for taking stock of what this approach has accomplished, and what future research it can facilitate. This reflective paper aims to accomplish three goals. The first addresses several questions related to the FRA for the purpose of ensuring that the applications of FRA in science education are based on robust understanding of the framework. The second discusses the significance of the FRA by highlighting its capacity to support science educators with the exploration of a wide range of contemporary issues that are relevant to how teachers and learners perceive and experience science. The third goal of the paper offers recommendations for future directions in FRA research in the areas of science identity development and multicultural education as well as curriculum, instruction, and assessment in science education.

While much is known about teacher learning of nature of science (NOS) concepts, less is known about how teachers develop an understanding of how to effectively teach NOS or how instructional views might differ across levels of the Family Resemblance Approach (FRA) wheel. Therefore, this study investigated the NOS instructional views related to different levels of the FRA wheel of preservice secondary science teachers as they completed a semester-long NOS course. At four times during the semester, data was collected through written documents and interviews about NOS instructional views. Participant NOS instructional views were evaluated in terms of three aspects of NOS teaching: explicit, reflective, and role of context (McComas et al., 2020). In terms of the explicit and reflective components of NOS instruction, participants generally progressed from utilizing inaccurate representations of NOS to inclusion of accurate implicit messages, and finally to explicit reflective instruction often mimicking course activities. As the semester progressed, their questioning also moved toward targeting more specific NOS aspects. As far as the role of context, participants moved from treating NOS as its own topic to a more embedded approach. Other findings include that preservice teachers tended to use more abstract and contextualized activities for social institutional aspects of NOS as opposed to concrete and moderately contextualized activities for cognitive-epistemic NOS. Features of the NOS course may account for some aspects of the learning progressions observed.

The purpose of this study was twofold: first, to investigate science teachers’ views about the nature of science (NOS); and second, to examine science teachers’ views about their NOS integration into instruction. Reconceptualized family resemblance approach to nature of science (RFN) is used as a theoretical and analytical framework. The participants of this study included 13 in-service science teachers in Turkey, and the data were collected through semi-structured interviews. It is noticed that teachers used scientific practices and scientific methods interchangeably. Participants provided detailed explanations regarding the social-institutional system of science. Participants’ views and interpretations were compatible with the RFN framework, which can show that they were aware of the social aspect of science. Concerning the NOS integration into instructions, findings revealed that teachers who had spent more time on NOS tended to include or thought it is important to include NOS into science lessons. Based on the results, it is suggested that the RFN framework can be used as both an analytical and theoretical framework to investigate teachers’ understanding of NOS.

Nature of science (NOS) is a global conception of the infrastructure of science and, therefore, forms the foundation for teaching and learning science, especially for preservice teachers who are expected to have the proper understanding of NOS to thoughtfully emphasize NOS within their instruction to students. However, studies investigating UAE science preservice teachers’ views of NOS through the macro-lens of the Reconceptualized Family Resemblance Approach to Nature of Science (RFN) are limited. This study, therefore, aims to determine the current state of UAE preservice teachers’ (N = 130) understanding of the NOS and NOS instruction. Results obtained from the RFN 70-item questionnaire demonstrate that teachers were mostly informed about issues pertaining to the social-institutional aspects compared to aspects related to the cognitive-epistemic nature of science. Although teachers appeared to hold informed perceptions on certain aspects of NOS across the RFN scales and subscales, they had mixed views, as well as misconceptions on other particular aspects of NOS (i.e., the role of bias, gender, and politics on scientific knowledge, the existence of a universal scientific method, and the distinction between laws and theories). Practical and pedagogical implications for teaching and an agenda for further research are discussed.