共查询到20条相似文献，搜索用时 46 毫秒
1.
《Teaching and Teacher Education》2006,22(3):363-375
The purpose of this study was to examine the effects of science education courses on a group of Taiwanese inservice and preservice teachers’ views toward the nature of science. There were two science education courses in the study; one was for 36 inservice teachers, while the other one was for 32 preservice teachers. Both of the courses included the philosophy of science, the instruction about student alternative conceptions and theories of conceptual change, and some classroom activities for science education. The data sources were based upon these teachers’ questionnaires, written responses to open-ended questions and interviews. The findings derived from this study revealed that both inservice and preservice teachers, to a certain extent, changed their views toward the nature of science when completing the courses. Many of them might reinterpret and reconstruct their views about science during the courses, and their views had progressed toward more constructivist-oriented. This study also suggested that the instruction about student alternative conceptions and conceptual change theories was more helpful than direct instruction about the philosophy of science in changing teachers’ views about science. 相似文献
2.
The purpose of this study was to investigate the patterns of students' conceptual restructuring within the theoretical framework of biologic evolution. The study draws on conceptual change theory in an effort to define the limits of the theory and suggest other models of restructuring. Through a series of 17 structured and open-ended interviews with each of 4 participants, the students' changing conceptions about facets of evolutionary theory were documented throughout the school year. Interview questions were developed from the wealth of alternative conceptions documented in the literature, and many interview techniques were employed to assure the mode validity of all research findings. The conceptual change documented demonstrates that many conceptions in this content area are closely interwoven, so that a change in one conception requires a change in many others. Four patterns of conceptual change were seen: (a) cascade, (b) wholesale, (c) incremental, and (d) dual constructions. Of these 4, only 2 conform to the changes described by conceptual change theory. The other two patterns suggest that different models of conceptual restructuring are required for further science education research. © 1996 John Wiley & Sons, Inc. 相似文献
3.
This research examined the relationship between content instruction and the development of elementary teacher candidates' understanding of conceptual change pedagogy. Undergraduate students (n = 27) enrolled in two sections of a science methods course received content instruction through either traditional or conceptual change methods, followed by instruction about conceptual change pedagogy. Candidates were interviewed pre- and postinstruction about their content and pedagogical knowledge and also wrote conceptual change lessons. Twelve of the 27 subjects were videotaped teaching in the field. Results indicate that prior to instruction, most candidates had weak content knowledge and held traditional pedagogical conceptions. After instruction, students in the conceptual change group had significantly larger gains in their content knowledge than those in the traditional group, gave qualitatively stronger pedagogical responses, and used conceptual change strategies more consistently in practice. These results indicate that personal experience of learning science content through conceptual change methods facilitated the development of understanding and use of conceptual change pedagogy in teaching practice. Thus if conceptual change methods are to be incorporated into teacher candidates' repertoire, science content courses that students take prior to teacher education should be taught using conceptual change pedagogy. In addition, courses in science education should use pedagogy more in line with that taught in methods courses. 相似文献
4.
Pei-Ling Hsu 《Cultural Studies of Science Education》2013,8(2):285-294
Tao, Oliver, and Venville’s paper addresses a debate between two hypotheses of children’s development of conceptual understandings of the Earth. The authors aim to investigate whether culture influences students’ conceptions of the Earth. However, one questionable assumption shared among conception and conceptual change studies is that researchers can identify children’s mental models, through their discourse, to explain their conceptions of scientific phenomena. In this commentary, I challenge this assumption by looking closely at various interview data and examining different dimensions of interview discourse about the Earth. Based on my findings, I suggest that instead of seeing science talk as representations of mental models, we look at children’s science talk as discursive practices mediated by the immediate social situation and the broader social milieu. 相似文献
5.
One of the factors affecting students' learning in science is their existing knowledge prior to instruction. The students' prior knowledge provides an indication of the alternative conceptions as well as the scientific conceptions possessed by the students. This study is concerned primarily with students' alternative conceptions and with instructional strategies to effect the learning of scientific conceptions; i.e., to effect conceptual change from alternative to scientific conceptions. The conceptual change model used here suggests conditions under which alternative conceptions can be replaced by or differentiated into scientific conceptions and new conceptions can be integrated with existing conceptions. The instructional strategy and materials were developed for a particular student population, namely, black high school students in South Africa, using their previously identified prior knowledge (conceptions and alternative conceptions) and incorporate the principles for conceptual change. The conceptions involved were mass, volume, and density. An experimental group of students was taught these concepts using the special instructional strategy and materials. A control group was taught the same concepts using a traditional strategy and materials. Pre- and posttests were used to assess the conceptual change that occurred in the experimental and control groups. The results showed a significantly larger improvement in the acquisition of scientific conceptions as a result of the instructional strategy and materials which explicitly dealt with student alternative conceptions. 相似文献
6.
Eduardo F. Mortimer 《Science & Education》1995,4(3):267-285
In this paper I draw an overview of a new model to analyse conceptual evolution in the classroom, based on the notion of Conceptual Profile. This model differs from conceptual change models in suggesting that it is possible to use different ways of thinking in different domains and that a new concept does not necessarily replace previous and alternative ideas. According to this model, learning science is to change a conceptual profile and become conscious of the different zones of the profile, which includes commonsense and scientific ideas.To exemplify how the Conceptual Profile notion can help to understand the evolution of conceptions in the classroom I shall determine the different zones that constitute the epistemological and ontological profile of the concepts of the atom and of physical states of matter. 相似文献
7.
The process of students' conceptual change was investigated during a computer‐supported physics unit in a Grade 10 science class. Computer simulation programs were developed to confront students' alternative conceptions in mechanics. A conceptual test was administered as a pre‐, post‐, and delayed posttest to determine students' conceptual change. Students worked collaboratively in pairs on the programs carrying out predict–observe–explain tasks according to worksheets. While the pairs worked on the tasks, their conversational interactions were recorded. A range of other data was collected at various junctures during instruction. At each juncture, the data for each of 12 students were analyzed to provide a conceptual snapshot at that juncture. All the conceptual snapshots together provided a delineation of the students' conceptual development. It was found that many students vacillated between alternative and scientific conceptions from one context to another during instruction, i.e., their conceptual change was context dependent and unstable. The few students who achieved context independent and stable conceptual change appeared to be able to perceive the commonalities and accept the generality of scientific conceptions across contexts. These findings led to a pattern of conceptual change which has implications for instructional practices. The article concludes with consequent implications for classsrooms. © 1999 John Wiley & Sons, Inc. J Res Sci Teach 36: 859–882, 1999 相似文献
8.
Dr. Diane Grayson 《Research in Science Education》1994,24(1):102-111
Numerous studies have shown that students often hold conceptions that conflict with accepted scientific ideas, both prior
to and after instruction. The failure of instruction to affect students' conceptions can be interpreted as a failure to facilitate
conceptual change. In this paper, an instructional strategy will be described that facilitates conceptual change in the special
case where conceptual difficulties appear to arise because students confuse related physics concepts. The strategy involves
two parts. Firstly, students observe an experiment or demonstration that conflicts with what they expect to see. Secondly,
the instructor identifies students' intuitions that are correct but that they have associated with an incorrect physics term,
and substitutes the correct physics term. Students can thus develop more scientifically acceptable understandings of physics
concepts without having to give up their intuitive ideas. The use of this strategy will be illustrated in two domains of physics.
Specializations: physics education, conceptual development, instructional design, improvement of tertiary science education. 相似文献
9.
Stella Vosniadou Christos Ioannides 《International Journal of Science Education》2013,35(10):1213-1230
A theoretical framework based on cognitive/developmental research is described. It is argued that science learning is a gradual process during which initial conceptual structures based on children's interpretations of everyday experience are continuously enriched and restructured. Conceptual change also involves increased metaconceptual awareness, cognitive flexibility, and theoretical coherence. Some of the implications of this research for the development of science curricula and for instruction are discussed. It is also argued that while cognitive/developmental research can provide us with important information about the process of learning science, it does not provide much information about the external, environmental variables that can facilitate cognitive performance and conceptual change. What is needed in the future is the development of a theory of learning that bridges science education and cognitive/developmental research. Such a theory should specify the mechanisms that can take an individual from one level of cognitive performance to the next and relate them to situational and cultural factors. 相似文献
10.
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
11.
This study was based on the framework of the “conflict map” to facilitate student conceptual learning about causes of the seasons. Instruction guided by the conflict map emphasizes not only the use of discrepant events, but also the resolution of conflict between students' alternative conceptions and scientific conceptions, using critical events or explanations and relevant perceptions and conceptions that explicate the scientific conceptions. Two ninth grade science classes in Taiwan participated in this quasi‐experimental study in which one class was assigned to a traditional teaching group and the other class was assigned to a conflict map instruction treatment. Students' ideas were gathered through three interviews: the first was conducted 1 week after the instruction; the second 2 months afterward; and the third at 8 months after the treatment. Through an analysis of students' interview responses, it was revealed that many students, even after instruction, had a common alternative conception that seasons were determined by the earth's distance to the sun. However, the instruction guided by the framework of the conflict map was shown to be a potential way of changing the alternative conception and acquiring scientific understandings, especially in light of long‐term observations. A detailed analysis of students' ideas across the interviews also strongly suggests that researchers as well as practicing teachers need to pay particular attention to those students who can simply recall the scientific fact without deep thinking, as these students may learn science through rote memorization and soon regress to alternative conceptions after science instruction. © 2005 Wiley Periodicals, Inc. J Res Sci Teach 42: 1089–1111, 2005 相似文献
12.
This study investigated the conceptual pathways of 19 Grade 11 introductory chemistry students (age 16–17) as they participated in a multirepresentational instruction on the particulate nature of matter (PNM). This study was grounded in contemporary conceptual change theory, in particular, research on students' conceptual pathways that focuses on the interaction between students' existing conceptions and instruction, which might give rise to observing multiple paths. This mixed method study combined a quantitative research design with qualitative data collection and analysis methods. Data were collected through open‐ended questionnaires, interviews, and document analysis to portray the patterns of students' conceptual pathways of the PNM from pre to postinstruction to 3 months after the instruction. An interpretive analysis of the qualitative data revealed six different conceptual pathways varying between radical progress and no additional progress (stable) after the multirepresentational instruction and between stable (no change) and full decay over a 3‐month period following the instruction. The identified patterns of conceptual pathways provide information about the manner in which conceptual change occurred, as well as suggest potential implications for instructional practices. © 2010 Wiley Periodicals, Inc. J Res Sci Teach 47: 1004–1035, 2010 相似文献
13.
Hasan Deniz 《Journal of Science Education and Technology》2011,20(6):743-749
This paper articulates the importance of epistemological beliefs (EBs) and draws a parallel between EBs literature in educational
psychology and nature of science (NOS) literature in science education. The paper stresses that EBs in science and NOS ideas
have common ground and they can be best improved through explicit-reflective instruction informed by conceptual change theory.
The paper concludes that future studies should explore the factors that mediate the development of EBs in science and NOS
ideas rather than documenting the changes in students’ and teachers’ EBs in science and NOS ideas after explicit-reflective
instruction through pre- and post assessments. 相似文献
14.
This research consists of a longitudinal study of 12 female elementary preservice teachers' conceptual understanding over the course of several months. The context in which the participants received instruction was in an inquiry‐based physics course, and the targeted science content was the cause of moon phases. Qualitative research methods, including observations and interviews, were used to investigate and describe participants' conceptual understanding over time. Participants were interviewed on their understanding of the cause of moon phases before instruction, 3 weeks after instruction, and again in delayed post‐interviews several months after instruction. Patterns and themes in the participants' conceptual understanding were identified through constant‐comparative data analysis. Consistent with results reported earlier, participants who had instruction that included recording and analyzing moon observations over time and psychomotor modeling of changes in moon phases were very likely to hold a scientific conceptual understanding shortly after instruction. The present study indicates a majority of participants continued to hold a scientific understanding six months or more after instruction. However, some participants reverted to alternative conceptions they had shown during the pre‐interview. These results are interpreted utilizing contemporary conceptual change theory. © 2006 Wiley Periodicals, Inc. J Res Sci Teach 44: 303–326, 2007 相似文献
15.
Two fundamental questions about science are relevant for science educators: (a) What is the nature of science? and (b) what aspects of nature of science should be taught and learned? They are fundamental because they pertain to how science gets to be framed as a school subject and determines what aspects of it are worthy of inclusion in school science. This conceptual article re-examines extant notions of nature of science and proposes an expanded version of the Family Resemblance Approach (FRA), originally developed by Irzik and Nola (International handbook of research in history, philosophy and science teaching. Springer, Dordrecht, pp 999–1021, 2014) in which they view science as a cognitive-epistemic and as an institutional-social system. The conceptual basis of the expanded FRA is described and justified in this article based on a detailed account published elsewhere (Erduran and Dagher in Reconceptualizing the nature of science for science education: scientific knowledge, practices and other family categories. Springer, Dordrecht, 2014a). The expanded FRA provides a useful framework for organizing science curriculum and instruction and gives rise to generative visual tools that support the implementation of a richer understanding of and about science. The practical implications for this approach have been incorporated into analysis of curriculum policy documents, curriculum implementation resources, textbook analysis and teacher education settings. 相似文献
16.
The purpose of this research was to investigate the impact of engineering design classroom activities on middle‐school students’ conceptions of heat transfer and thermal energy. One eighth‐grade physical science teacher and the students in three of her classes participated in this mixed‐methods investigation. One class served as the control receiving the teacher’s typical instruction. Students in a second class had the same learning objectives, but were taught science through an engineering design curriculum that included demonstrations targeting specific alternative conceptions about heat transfer and thermal energy. A third class also used the engineering design curriculum, but students experienced typical demonstrations instead of targeted ones. Conceptual understandings of heat transfer and thermal energy and attitudes towards engineering were assessed prior to and after the interventions through interviews, observations, artefact analysis, a multiple choice assessment, and a Likert scale assessment. Results indicated that the engineering design curriculum with targeted demonstrations was significantly more effective in eliciting desired conceptual change than the typical instruction and also significantly more effective than the engineering curriculum without targeted demonstrations. Implications from this study can inform how teachers should be prepared to use engineering design activities in science classrooms for conceptual change. 相似文献
17.
Maher Hashweh 《科学教学研究杂志》1988,25(2):121-134
18.
19.
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
20.
In Uganda, curbing the spread of HIV/AIDS has largely depended on public and private media messages about the disease. Media
campaigns based on Uganda’s cultural norms of communication are metaphorical, analogical and simile-like. The topic of HIV/AIDS
has been introduced into the Senior Three (Grade 11) biology curriculum in Uganda. To what extent do students’ pre-conceptions
of the disease, based on these media messages influence students’ development of conceptual understanding of the disease,
its transmission and prevention? Of significant importance is the impact the conceptions students have developed from the
indirect media messages on classroom instruction on HIV/AIDS. The study is based in a theoretical framework of conceptual
change in science learning. An interpretive case study to determine the impact of Ugandan students’ conceptions or perceptions
on classroom instruction about HIV/AIDS, involving 160 students aged 15–17, was conducted in four different Ugandan high schools:
girls boarding, boys boarding, mixed boarding, and mixed day. Using questionnaires, focus group discussions, recorded biology
lessons and informal interviews, students’ preconceptions of HIV/AIDS and how these impact lessons on HIV/AIDS were discerned.
These preconceptions fall into four main categories: religious, political, conspiracy and traditional African worldviews.
Results of data analysis suggest that students’ prior knowledge is persistent even after biology instructions. This has implications
for current teaching approaches, which are mostly teacher-centred in Ugandan schools. A rethinking of the curriculum with
the intent of offering science education programs that promote understanding of the science of HIV/AIDS as opposed to what
is happening now—insensitivity to misconceptions about the disease—is needed. 相似文献