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1.
Students' environmental NOS views,compassion, intent,and action: Impact of place‐based socioscientific issues instruction 
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下载免费PDF全文 Benjamin C. Herman 《科学教学研究杂志》2018,55(4):600-638
Preparing students to achieve the lofty goal of functional scientific literacy entails addressing the normative and non‐normative facets of socioscientific issues (SSI) such as scientific processes, the nature of science (NOS) and diverse sociocultural perspectives. SSI instructional approaches have demonstrated some efficacy for promoting students' NOS views, compassion for others, and decision making. However, extant investigations appear to neglect fully engaging students through authentic SSI in several ways. These include: (i) providing SSI instruction through classroom approaches that are divorced from students' lived experiences; (ii) demonstrating a contextual misalignment between SSI and NOS (particularly evident in NOS assessments); and (iii) framing decision making and position taking analogously—with the latter being an unreliable indicator of how people truly act. The significance of the convergent parallel mixed‐methods investigation reported here is how it responds to these shortcomings through exploring how place‐based SSI instruction focused on the contentious environmental issue of wolf reintroduction in the Greater Yellowstone Area impacted sixty secondary students' NOS views, compassion toward those impacted by contentious environmental issues, and pro‐environmental intent. Moreover, this investigation explores how those perspectives associate with the students' pro‐environmental action of donating to a Yellowstone environmental organization. Results demonstrate that the students' NOS views became significantly more accurate and contextualized, with moderate to large effect, through the place‐based SSI instruction. Through that instruction, the students also exhibited significant gains in their compassion for nature and people impacted by contentious environmental issues and pro‐environmental intent. Further analyses showed that donating students developed and demonstrated significantly more robust and contextualized NOS views, compassion for people and nature impacted by contentious environmental issues, and pro‐environmental intent than their nondonating counterparts. Pedagogical implications include how place‐based learning in authentic settings could better prepare students to understand NOS, become socioculturally aware, and engage SSI across a variety of contexts. 相似文献
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Lindsay B. Wheeler Bridget K. Mulvey Jennifer L. Maeng Mila Rosa Librea-Carden Randy L. Bell 《International Journal of Science Education》2013,35(14):1905-1925
ABSTRACTGraduate students regularly teach undergraduate STEM courses and can positively impact students’ understanding of science. Yet little research examines graduate students’ knowledge about nature of science (NOS) or instructional strategies for teaching graduate students about NOS. This exploratory study sought to understand how a 1-credit Teaching in Higher Education course that utilised an explicit, reflective, and mixed-context approach to NOS instruction impacted STEM graduate students’ NOS conceptions and teaching intentions. Participants included 13 graduate students. Data sources included the Views of Nature of Science (VNOS-Form C) questionnaire administered pre- and post-instruction, semi-structured interviews with a subset of participants, and a NOS-related course project. Prior to instruction participants held many alternative NOS conceptions. Post-instruction, participants’ NOS conceptions improved substantially, particularly in their understandings of theories and laws and the tentative nature of scientific knowledge. All 12 participants planning to teach NOS intended to use explicit instructional approaches. A majority of participants also integrated novel ideas to their intended NOS instruction. These results suggest that a teaching methods course for graduate students with embedded NOS instruction can address alternative NOS conceptions and facilitate intended use of effective NOS instruction. Future research understanding graduate students' NOS understandings and actual NOS instruction is warranted. 相似文献
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The Influence of Guided Inquiry and Explicit Instruction on K–6 Teachers’ Views of Nature of Science
Valarie L. Akerson Deborah L. Hanson Theresa A. Cullen 《Journal of Science Teacher Education》2007,18(5):751-772
This study assessed the influence of guided inquiry and explicit reflective instruction on K-6 teachers’ views of nature of
science (NOS). Using the Views of Nature of Science Elementary School Version 2 (VNOS-D2), and associated interviews we tracked
the changes in NOS views of teacher participants prior to and following a summer professional development program. The teachers
participated in guided inquiry to improve physics knowledge, and explicit-reflective NOS activities to improve their views
of NOS. Videotaped records of the workshop ensured that explicit reflective NOS instruction took place in conjunction with
physics inquiry instruction. Analysis indicated that teachers improved their NOS views by the conclusion of the institute
Implications for providing professional development combining inquiry and NOS instruction are made. 相似文献
4.
The Importance of Teaching and Learning Nature of Science in the Early Childhood Years 总被引：1，自引：0，他引：1
Valarie L. Akerson Gayle A. Buck Lisa A. Donnelly Vanashri Nargund-Joshi Ingrid S. Weiland 《Journal of Science Education and Technology》2011,20(5):537-549
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 students, not capable of learning NOS due
to developmental unreadiness? Or would young children be capable of learning about NOS through appropriate instruction? Young
children (Kindergarten through third grade) were interviewed and taught about NOS in a variety of contexts (informal, suburban,
and urban) using similar teaching strategies that have been found effective at teaching about NOS with older students. These
teaching strategies included explicit decontextualized and contextualized NOS instruction, through the use of children’s literature,
debriefings of science lessons, embedded written NOS assessments, and guided inquiries. In each context the researchers interviewed
students prior to and after instruction, videotaped science instruction and maintained researcher logs and field notes, collected
lesson plans, and copies of student work. The researchers found that in each setting young children did improve their understandings
of NOS. Across contexts there were similar understandings of NOS aspects prior to instruction, as well as after instruction.
There were also several differences evident across contexts, and across grade levels. However, it is clear that students as
young as kindergarten are developmentally capable of conceptualizing NOS when it is taught to them. The authors make recommendations
for teaching NOS to young children, and for future studies that explore learning progressions of NOS aspects as students proceed
through school. 相似文献
5.
Benjamin C. Herman Michael P. Clough Joanne K. Olson 《Research in Science Education》2017,47(1):161-184
This study investigated what 13 secondary science teachers at various nature of science (NOS) instruction implementation levels talked about when they reflected on their teaching. We then determined if differences exist in the quality of those reflections between high, medium, and low NOS implementers. This study sought to answer the following questions: (1) What do teachers talk about when asked general questions about their pedagogy and NOS pedagogy and (2) what qualitative differences, if any, exist within variables across teachers of varying NOS implementation levels? Evidence derived from these teachers’ reflections indicated that self-efficacy and perceptions of general importance for NOS instruction were poor indicators of NOS implementation. However, several factors were associated with the extent that these teachers implemented NOS instruction, including the utility value they hold for NOS teaching, considerations of how people learn, understanding of NOS pedagogy, and their ability to accurately and deeply self-reflect about teaching. Notably, those teachers who effectively implemented the NOS at higher levels value NOS instruction for reasons that transcend immediate instructional objectives. That is, they value teaching NOS for achieving compelling ends realized long after formal schooling (e.g., lifelong socioscientific decision-making for civic reasons), and they deeply reflect about how to teach NOS by drawing from research about how people learn. Low NOS implementers’ simplistic notions and reflections about teaching and learning appeared to be impeding factors to accurate and consistent NOS implementation. This study has implications for science teacher education efforts that promote NOS instruction. 相似文献
6.
Although the importance of nature of science (NOS) instruction for learners as young as kindergartners is emphasised in a great number of documents and studies, very little research has been conducted in early childhood contexts. Thus, researchers are still not able to see a comprehensive picture of young children’s understandings of NOS. The purpose of this qualitative study is to investigate kindergartners’ developmental ability to comprehend tenets of NOS. Using an explicit–reflective approach and activities designed to develop their understandings of NOS, we instructed eight kindergartners for 10 days over the course of a month to document changes in their thinking. To this end, they were interviewed individually using Young Children’s Views of Science before and after instruction. The results indicate that generally, the kindergartners had an inadequate understanding of NOS before instruction but had developed it by the end of instruction. Each child’s understanding of the individual aspects of NOS developed to different degrees, creative NOS improving most substantially. This study corroborates that kindergartners are not developmentally constrained to develop informed NOS understandings. On the contrary, they are able to develop an informed understanding of NOS that can be improved by the implementation of explicit–reflective instruction. 相似文献
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Learners’ Responses to the Demands of Conceptual Change: Considerations for Effective Nature of Science Instruction 总被引：1，自引：5，他引：1
Michael P. Clough 《Science & Education》2006,15(5):463-494
Much has been written about how effective nature of science instruction must have a significant explicit and reflective character.
However, while explicitly drawing students’ attention to NOS issues is crucial, learning and teaching the NOS are essentially
matters of conceptual change. In this article, how people learn and learners’ responses to the demands of conceptual change
are used to explain how students may exit from instruction with fundamental NOS misconceptions left intact or only slightly
altered, despite being explicitly and reflectively attended to more accurate ideas. The purpose of this concept paper is to
set within a theoretical framework of learning, and bring some coherence to, what has rapidly become a large body of empirical
research regarding effective NOS instruction. Toward these two ends, this article: (1) illustrates how a conceptual change
framework can be used to account for learners’ responses to NOS instruction and what teachers might do to promote understanding
NOS and transferring it to new contexts; (2) characterizes popularly advocated NOS instructional approaches along a continuum
marked by increasing connection to the workings of science, and decreased ability to dismiss NOS lessons as extraneous to
authentic science; and (3) proposes that NOS instruction would likely be more effective if teachers deliberately scaffolded
classroom experiences and students’ developing NOS understanding back and forth along the continuum. 相似文献
9.
ABSTRACTDespite successful attempts to improve learners’ nature of science (NOS) conceptions through explicit, reflective approaches, retention of improved conceptions is rarely addressed in research. The issue of context for NOS instruction has implications for this retention. Whether to contextualise has been the question occupying science educators’ attention. We think this question is misplaced. Instead, we build upon recent research addressing a context continuum – drawing on the strengths of both contextualised and noncontextualised NOS instruction – to improve retention. Although there are many different potential contexts for NOS instruction, this investigation focuses on science content as context. The present investigation focused on long-term retention of improved NOS conceptions and rationales for NOS instruction. Participants were all 25 teachers who completed a professional development programme (PDP) utilising a mixed contextualisation approach to NOS instruction. We classified teachers’ NOS conceptions into three levels of understanding using the Views of the Nature of Science Form-C responses and interviews three times over the year: pre-, post-, and 10-month delayed post-PDP. Results indicated that initially participants held many alternative NOS conceptions. Post-instruction, responses were substantially improved across all NOS concepts. Furthermore, nearly all of the participants’ conceptions were retained across the academic year following the PDP. Participants offered varied rationales for NOS instruction including its potential to improve students’ scientific literacy, perceptions of the relevance of science, improve positive risk-taking, and increase tolerance for differences. These results contrast favourably with previous reports of the retention of improvements in NOS conceptions over time. 相似文献
10.
Tracy J. Posnanski 《Journal of Science Teacher Education》2010,21(5):589-621
Establishing literacy in science is often linked to building knowledge about the Nature of Science (NOS). This paper describes
and evaluates an inservice program designed to build elementary teachers’ understanding of NOS and an awareness of how NOS
impacts science classroom instruction. Data sources consisted of surveys, action research plan documentation and classroom
observations. Program participants tended to demonstrate some gains in understanding more about NOS and they linked positive
experiences in the program to the explicit and activity-based NOS instruction provided. Yet, participation in the professional
development project might not have been equally beneficial for all teachers. The understanding of NOS may have been restricted
to certain NOS aspects, and the demonstration of the participants’ understanding of NOS may have been short-lived with a somewhat
limited impact on sustainable, long-term NOS-based classroom instruction. Implications for designing NOS related professional
development programs and suggestions for improvements to further develop teacher understanding of NOS are discussed. 相似文献
11.
This investigation assessed the impact of situating explicit nature of science (NOS) instruction within the issues surrounding
global climate change and global warming (GCC/GW). Participants in the study were 15 preservice elementary teachers enrolled
in a science methods course. The instructional intervention included explicit NOS instruction combined with explicit GCC/GW
instruction situated within the normal elementary science methods curriculum. Participants’ conceptions of NOS and GCC/GW
were assessed with pre- and postadministrations of open-ended questionnaires and interviews. Results indicated that participants’
conceptions of NOS and GCC/GW improved over the course of the semester. Furthermore, participants were able to apply their
conceptions to decision making about socioscientific issues. The results provide support for context-based NOS instruction
in an elementary science methods course. 相似文献
12.
ABSTRACTThis qualitative study explored elementary teachers’ perceptions about the effective features of explicit-reflective nature of science (NOS) instruction. Our participants were four elementary teachers from a public charter school located in the Southwestern U.S.A. The four elementary teachers participated in an academic year-long professional development about NOS which consisted of NOS training and NOS teaching phases. After each phase of the professional development, we specifically asked our participants which features of the explicit-reflective NOS instruction they found effective in improving their NOS conceptions by presenting pre- and post-profiles of their NOS conceptions. We identified nine features perceived by the participants as effective components of explicit-reflective NOS instruction: (1) specific focus on NOS content, (2) participation in hands-on NOS activities, (3) introductory NOS readings, (4) multiple types/forms of reflection, (5) multiple exposure to NOS content, (6) structural consistency in the presentation of NOS content, (7) the evaluation of secondary NOS data from elementary students, (8) the analysis of national and state science standards in terms of NOS content, and (9) NOS teaching experience. 相似文献
13.
Benjamin C. Herman Michael P. Clough Joanne K. Olson 《Journal of Science Teacher Education》2013,24(7):1077-1102
The assertion that general reform-based science teaching practices (GRBSTPs) can facilitate nature of science (NOS) instruction has been mentioned in the literature, but rigorous and transparent empirical substantiation for this claim has not been made. This investigation empirically demonstrates an association between thirteen experienced teachers’ NOS implementation practices and their GRBSTPs. While effectively implementing GRBSTPs does not ensure the NOS will be taught, the findings show that these practices are associated with high levels of NOS instruction. In this study, teachers who implemented higher levels of reform-based practices were also observed to enact more instances of planned and spontaneous effective NOS instruction. Furthermore, these teachers were more likely to recognize and capitalize on NOS teaching opportunities when they unexpectedly arose in the context of their GRBSTPs. Just as NOS understanding must be assessed when determining factors associated with teachers’ NOS implementation, teachers’ GRBSTPs should also be empirically and transparently established to ensure they do not mask or confound other factors associated with NOS implementation. 相似文献
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This study assessed the influence of a reflective, explicit, activity‐based approach to nature of science (NOS) instruction undertaken in the context of an elementary science methods course on preservice teachers' views of some aspects of NOS. These aspects included the empirical, tentative, subjective (theory‐laden), imaginative and creative, and social and cultural NOS. Two additional aspects were the distinction between observation and inference, and the functions of and relationship between scientific theories and laws. Participants were 25 undergraduate and 25 graduate preservice elementary teachers enrolled in two sections of the investigated course. An open‐ended NOS questionnaire coupled with individual interviews was used to assess participants' NOS views before and at the conclusion of the course. The majority of participants held naive views of the target NOS aspects at the beginning of the study. During the first week of class, participants were engaged in specially designed activities that were coupled with explicit NOS instruction. Throughout the remainder of the course, participants were provided with structured opportunities to reflect on their views of the target NOS aspects. Postinstruction assessments indicated that participants made substantial gains in their views of some of the target NOS aspects. Less substantial gains were evident in the case of the subjective, and social and cultural NOS. The results of the present study support the effectiveness of explicit, reflective NOS instruction. Such instruction, nonetheless, might be rendered more effective when integrated within a conceptual change approach. © 2000 John Wiley & Sons, Inc. J Res Sci Teach 37: 295–317, 2000. 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
19.
Rola Khishfe 《International Journal of Science Education》2013,35(10):1639-1667
Having the learning and retention of science content and skills as a goal of scientific literacy, it is significant to study the issue of retention as it relates to teaching and learning about nature of science (NOS). Then, the purpose of this study was to investigate the development of NOS understandings of students, and the retention of these understandings four months after being acquired through explicit reflective instruction in relation to two contexts. Participants were 24 tenth-grade students at a private high school in a city in the Middle East. Explicit NOS instruction was addressed within a six-week unit about genetic engineering. Three NOS aspects were integrated and dispersed across the unit. A questionnaire, together with semi-structured interviews, was administered as pre-, post-, and delayed post-test to assess the retention of participants’ NOS understandings. The questionnaire had two open-ended scenarios addressing controversial socioscientific issues about genetically modified food and water fluoridation. Results showed that most students improved their naïve understandings of NOS in relation to the two contexts following the six-week unit with the explicit NOS instruction. However, these newly acquired NOS understandings were not retained by all students four months after instruction. Many of the students reverted back to their earlier naïve understandings. Conclusions about the factors facilitating the process of retention as the orientation to meaningful learning and the prolonged exposure to the domain were discussed in relation to practical implications in the classroom. 相似文献
20.
The Nature of Science in Science Education: An Introduction 总被引：10，自引：4，他引：6