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The nature of science (NOS) has a prominent role among the national science education content standards at all grade levels, K–12. Results from a national survey of collegiate science educators indicate the perception that the greatest contributors to preservice teachers’ understanding of the nature of science were science methods courses, research projects, and science content courses. Implications of findings are discussed, including connections to current research concerning teacher preparation for effective NOS classroom teaching and student learning.The Nature of Science course on the authors’ campus was initiated in the early 1990s, has evolved, and remains in the required core curriculum for preservice chemistry, earth science, and physics teacher candidates. It is the capstone for NOS insights. It adds to and refines impressions garnered implicitly from science content courses, the methods course, and, for some, an undergraduate research experience. 相似文献
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This study explored whether early childhood preservice teachers' concerns about teaching nature of science (NOS) and their intellectual levels influenced whether and how they taught NOS at the preschool and primary (K‐3) levels. We used videotaped classroom observations and lesson plans to determine the science instructional practices at the preschool and primary levels, and to track whether and how preservice teachers emphasized NOS. We used the Stages of Concern Questionnaire (SOCQ) pre‐ and postinternship to determine concerns about NOS instruction, and the Learning Context Questionnaire (LCQ) to determine intellectual levels. We found that neither concerns about teaching NOS nor intellectual level were related to whether and how the preservice teachers emphasized NOS; however, we found that all preservice early childhood teachers began their internships with NOS concern profiles of “worried.” Two preservice teachers' NOS concerns profiles changed as a result of their internships; one to “cooperator” and one to “cooperator/improver.” These two preservice teachers had cooperating teachers who were aware of NOS and implemented it in their own science instruction. The main factors that hindered or facilitated teaching NOS for these preservice teachers were the influence of the cooperating teacher and the use of the science curriculum. The preservice teacher with the cooperating teacher who understood and emphasized NOS herself and showed her how to modify the curriculum to include NOS, was able to explicitly teach NOS to her students. Those in classrooms whose cooperating teachers did not provide support for NOS instruction were unable to emphasize NOS. © 2009 Wiley Periodicals, Inc. J Res Sci Teach 47:213–233, 2010 相似文献
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This study explored the development of a community of learners through a professional development program to improve teachers' views of nature of science (NOS) and teaching practice. The Views of Nature of Science questionnaire and interviews were used to assess teachers' conceptions of NOS three times over the course of the study. Notes and videotapes taken during workshops and classroom observations were used to track influence of the community of learners on classroom practice. The community of practice (CoP) was fostered through an intensive summer workshop, monthly school site workshops, and classroom support to aid teachers in incorporating new techniques and reflecting upon their learning and practice. We found that teachers became aware of their changes in views about NOS once they struggled with the concepts in their own teaching and discussed their struggles within the professional development community. The CoP on its own was not sufficient to change teacher's practice or knowledge, but it created a well‐supported environment that facilitated teacher change when paired with NOS modeling and explicit reflection. Cases of three teachers are used to illustrate changes in views and teaching practice common to the teachers in this study. © 2009 Wiley Periodicals, Inc. J Res Sci Teach 46: 1090–1113, 2009 相似文献
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Maria Develaki 《Science & Education》2012,21(6):853-879
The availability of teaching units on the nature of science (NOS) can reinforce classroom instruction in the subject, taking into account the related deficiencies in textbook material and teacher training. We give a sequence of teaching units in which the teaching of Newton??s gravitational theory is used as a basis for reflecting on the fundamental factors that enter into the cognitive and evaluative processes of science, such as creativity, empirical data, theorising, substantiating and modelling tactics. Distinguishing phases in the evolution of a theory (initial conception and formation, testing, scope and limits of the theory) helps show how the importance of these factors varies from phase to phase, while they continue to interact throughout the whole process. Our concept of how to teach NOS is based on the introduction of such special units, containing direct instruction in NOS elements incorporated into curricular science content, thus giving an initial theoretical basis with which epistemological points of other course material can be correlated during the usual classroom teaching of the subject throughout the school year. The sequence is presented in the form of teaching units that can also be used in teachers?? NOS education, extended in this case by more explicit instruction in basic philosophical views of the nature of science and how they relate to and impact on teaching. 相似文献
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Fouad Abd-El-Khalick 《Science & Education》2013,22(9):2087-2107
The ubiquitous goals of helping precollege students develop informed conceptions of nature of science (NOS) and experience inquiry learning environments that progressively approximate authentic scientific practice have been long-standing and central aims of science education reforms around the globe. However, the realization of these goals continues to elude the science education community partly because of a persistent, albeit not empirically supported, coupling of the two goals in the form of ‘teaching about NOS with inquiry’. In this context, the present paper aims, first, to introduce the notions of, and articulate the distinction between, teaching with and about NOS, which will allow for the meaningful coupling of the two desired goals. Second, the paper aims to explicate science teachers’ knowledge domains requisite for effective teaching with and about NOS. The paper argues that research and development efforts dedicated to helping science teachers develop deep, robust, and integrated NOS understandings would have the dual benefits of not only enabling teachers to convey to students images of science and scientific practice that are commensurate with historical, philosophical, sociological, and psychological scholarship (teaching about NOS), but also to structure robust inquiry learning environments that approximate authentic scientific practice, and implement effective pedagogical approaches that share a lot of the characteristics of best science teaching practices (teaching with NOS). 相似文献
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Valarie L. Akerson Theresa A. Cullen Deborah L. Hanson 《Journal of Science Teacher Education》2010,21(6):723-745
This study explored the nature of science (NOS) assessments K-4 classroom teachers developed for measuring students’ understandings
of NOS elements. We used the Views of Nature of Science Questionnaire-Form VNOS-D2 (Views of Nature of Science Elementary
School Version 2) and interviews to verify that teachers’ conceptions of NOS were sufficient to enable them to teach and assess
NOS. We collected copies of teachers’ action research designs, lesson plans, and assessment tools, conducted classroom observations
and made field notes of their science instruction and assessments. We videotaped conversations at monthly workshops to note
discussion surrounding teaching and assessing NOS in K-4 classrooms. We found that experienced teachers designed a variety
of strategies for assessing NOS conceptions that differed by grade level. 相似文献
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生态学作为许多高等院校理科专业的基础课程,最重要的是实现教育部提出的科学素养培养目标。将整个生态学实验教学过程与科学本质（NOS）进行有机的结合,可有效提升大学生在科学世界观、科学探究活动和科学事业等维度的科学本质素养。对基于NOS的生态学实验课程的改革和教学实践进行回顾和总结。 相似文献
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This study investigated the effect of including explicit nature of science (NOS) content in read-alouds of elementary science trade books on the teaching and learning of NOS. We focused on three aspects of NOS: the creative, the empirical, and the inferential NOS. The trade books were read aloud by teachers in three hierarchical levels: Level I served as a control and consisted of a trade book that remained unmodified, Level II consisted of a trade book that had been modified to include explicit references to NOS, and Level III consisted of a modified trade book accompanied by educative curriculum materials that were aimed at improving the teachers' views of NOS as well as supporting teaching about NOS. We used the Views of Nature of Science Questionnaire-form CE (VNOS-CE) preintervention and postintervention to determine changes in teachers' views of NOS and interviews preintervention and postintervention to determine changes in students' views. Audio recordings of read-alouds were used to determine changes in teaching practice, including the frequency and the quality (i.e., naïve or informed) of the NOS references in the discussions. Interviews were used to determine teachers' perceptions of the modified trade books and educative curriculum materials. We found that both teachers and students developed more informed views of the targeted NOS aspects after the intervention and that teachers addressed NOS more often, and in a more informed manner, when they had trade books that explicitly supported NOS instruction and educative curriculum materials that supported their learning about NOS. Furthermore, they perceived the intervention materials favorably. Teachers' views and practices were able to change in tandem because of the intervention materials that supported explicit NOS instruction. We highlight the need for more widespread development of similar educative curriculum materials. 相似文献
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Science teachers need an adequate understanding of nature of science (NOS) and the ability to embed NOS in their teaching.
This collective case study aims to explore in-service science teachers’ conceptions of NOS and the embeddedness of NOS in
their teaching about astronomy and space. Three science teachers participated in this study. All participants attended the
NOS workshop based on an explicit-reflective approach. They were asked to respond to the Myths of Science Questionnaire on
three different occasions, i.e., at the beginning and the end of the NOS workshop and a semester after the workshop. Classroom
observation, interviews after teaching, and a collection of related documents were also employed to collect data. The data
were analyzed using a constant comparative method. The results revealed two important assertions. First, science teachers’
conceptions of NOS are stable and resistant to change. However, an explicit-reflective approach employed in the NOS workshop,
to some extent, promoted science teachers’ understanding and reasoning about NOS. Second, science teachers’ conceptions of
NOS are not directly related to their classroom practices. With different degrees of NOS understanding, all participants taught
NOS implicitly and missed most of the opportunities to address aspects of NOS embedded in the topics they taught. The implications
of these findings are also discussed. 相似文献
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论数学课堂活动教学两面性 总被引：1，自引：0，他引：1
随着基础教育中数学课程改革的深入实施，“活动”教学成为了数学课堂中一个“看点”。从理论角度讲，活动教学具有超越传统数学课堂教学的意义，然而实际数学课堂上所进行的活动教学却表现出了许多不尽人意之处。这其中的原因可能是多方面的，如从理论到实践诸技术环节的错位。但是现代教学制度下的数学课堂活动教学的两面性也是其中一个主要原因。数学课堂活动教学的两面性是数学知识性质以及活动教学的基本理念所致。因此，从理论上认识这种两面性，把握数学课堂活动教学的基本要求，并进而着力体现数学课堂活动教学本质，让活动教学落到实处。 相似文献
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Although the goal of developing school students’ understanding of nature of science (NOS) has long been advocated, there is still a lack of research that focuses on probing how science teachers, a kind of major stakeholder in NOS instruction, perceive the values of teaching NOS. Through semi-structured interviews, this study investigated the views of 15 Hong Kong in-service senior secondary science teachers about the values of teaching NOS. These values as perceived by the teachers fall into two types. The first type is related to students’ learning of science in the classroom and involves: (i) facilitating the study of subject knowledge, (ii) increasing the interest in learning science, (iii) supporting the conduct of scientific inquiry, (iv) meeting the needs of public examinations, and (v) fulfilling the requirement of learning science. The second type goes beyond learning science and includes (i) developing thinking skills, (ii) cultivating scientific ethics in students, and (iii) supporting the participation in public decisions on socioscientific issues. Although rich relationships were perceived by these teachers between NOS instruction and students’ learning of science, few values were stated from broad social and cultural perspectives. Suggestions are made about developing teachers’ views of the values of teaching NOS so as to influence their intention of teaching it. 相似文献
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Nader Wahbeh 《International Journal of Science Education》2013,35(3):425-466
This study (a) assessed the influence of an integrated nature of science (NOS) instructional intervention on inservice secondary science teachers' understandings, retention of those understandings, and their NOS instructional planning and practices; and (b) examined factors that mediated the translation of teachers' NOS understandings into practice. Nineteen teachers participated in an intensive, 6-week NOS course, which concluded with teachers developing plans to address NOS in their classrooms. Next, 6 participants were observed as they implemented their instructional plans. Data sources included pretest, posttest, and delayed-test NOS assessments, classroom observations, and several teacher-generated artifacts. The NOS course was effective in helping teachers develop informed NOS conceptions and retain those understandings 5 months after its conclusion. Teachers met with challenges and successes as they attempted to address NOS instructionally. The translation of NOS conceptions into practice was primarily mediated by the very nature of teachers' newly acquired NOS understandings, which were situated within the science contents, contexts, and experiences in which they were developed (i.e. the NOS course); thus, limiting participants' abilities to transfer their understandings into novel contexts and contents. The results helped build a model of the sources of science teachers' pedagogical content knowledge for teaching about NOS in content-rich contexts. 相似文献
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Leonie J. Rennie 《Research in Science & Technological Education》2013,31(2):121-133
The recent explicit inclusion of technology into the science component of the school curriculum in Western Australia necessitates changes in both curriculum materials and the nature of classroom teaching. This paper reports an investigation of the perceptions of technology of senior teachers who are heads of the science department in their schools, and relates these perceptions with those of a sample of 13‐year‐old pupils in this state. The investigation reveals that many teachers have a restricted view of technology which may be interpreted as a view that technology is dependent upon science. Such a view may neglect the historical aspects and societal influences on science and technology. Further, the available evidence indicates that local pupils have a low level of awareness of technology. The paper discusses the implications of these findings for curriculum change and suggests a starting point for achieving a successful balance in the teaching of technology, science and society issues in the classroom. 相似文献
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在我国其它省市实验区科学课程面对综合还是分科选择的难题之时,浙江省的科学课程改革与实施坚持着“综合”的导向,因而审视与反思浙江省综合科学课程推进中的问题成为必要。本文基于科学课程实施现状的调研、七个维度三个层次设计的访谈、对典型地区学校的课堂观察,提出浙江省综合科学课程推进中的问题,表现为“综合科学”与“组合科学”两种科学课程形态的并存;科学教师对科学课程性质与目标认识不到位;对课程资源理解不一,科学教材之外的课程资源开发不足;有效科学教学方式与方法的使用亟待专业引领。进而立足于综合科学课程实施中的难点,提出有效推进科学课程实施的根本在于以培养与培训相结合促进科学教师专业发展;以教材比较研究促进科学教材的完善;改革中考,促进科学教师对科学教学评价的探索。 相似文献
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Panagiotis Piliouras Katerina Plakitsi Fanny Seroglou Georgia Papantoniou 《Research in Science Education》2018,48(6):1221-1246
The nature of science (NOS) has become a central goal of science education in many countries. This study refers to a developmental work research program, in which four fifth-grade elementary in-service teachers participated. It aimed to improve their understandings of NOS and their abilities to teach it effectively to their students. The 1-year-long, 2012–2013, program consisted of a series of activities to support teachers to develop their pedagogical content knowledge of NOS. In order to accomplish our goal, we enabled teacher-researchers to analyze their own discourse practices and to trace evidence of effective NOS teaching. Many studies indicate the importance of examining teachers’ discussions about science in the classroom, since it is teachers’ understanding of NOS reflected in these discussions that will have a vital impact on students’ learning. Our proposal is based on the assumption that reflecting on the ways people form meanings enables us to examine and seek alternative ways to communicate aspects of NOS during science lessons. The analysis of discourse data, which has been carried out with the teacher-researchers’ active participation, indicated that initially only a few aspects of NOS were implicitly incorporated in teacher-researchers’ instruction. As the program evolved, all teacher-researchers presented more informed views on targeted NOS aspects. On the whole, our discourse-focused professional development program with its participatory, explicit, and reflective character indicated the importance of involving teacher-researchers in analyzing their own talk. It is this involvement that results in obtaining a valuable awareness of aspects concerning pedagogical content knowledge of NOS teaching. 相似文献