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1.
Volcanoes There are thou-sands of volcanoes all over the world. What makes volcanoes? What happens? The inside of the earth is very hot. Be-cause it is very,very hot,the rock has melted like ice.It has become liquid,like water.It is always boiling, like water in a kettle. If you have seen a kettle boiling, you know that the steam and boiling water try to get out. The very hot melted rock inside the earth also tries to get out. Usually it cannot be-cause the outside of the earth is too thick…  相似文献   

2.
Science education literature explicitly and implicitly advocates basic tenets (criteria) for “the nature of science.” The purpose of this study was to investigate whether the science education tenets are also held by philosophers of science (those who study purported tenets of science), and furthermore, to reveal possible related philosophical positions underpinning differences in responses among the philosophers. The philosophers of science expressed significant disagreements with the tenets, and different philosophers of science varied on their views about the tenets. In addition, relationships were found among the philosophers' views of the nature of science, their views of philosophy of space, and with their philosophy of science in general. Therefore, the tenets that are advocated as basic criteria for science education's “the nature of science” must be reconsidered so that more accurate criteria may be developed for future nature of science research. © 1997 John Wiley & Sons, Inc. J Res Sci Teach 34 : 39–55, 1997.  相似文献   

3.
This article explores the concept of ‘curious play’ as a theoretical framework to understand and communicate children’s experiences of free play in nature. The concept emerged interactively from three sources of inspiration: an ethnographically inspired study of children playing in nature; as a critique of the concept of ‘risky play’ being the dominant discourse on children’s play in natural environments; and from phenomenological and cultural-historical theories of children’s play and play environments. The article illustrates this interplay through an analysis of two empirical examples, and argues that curious play offers a comprehensive and existential approach to understanding the interplay of children playing in nature and children’s growth. Thus, children are conceptualized as active explorers and playful agents whilst embodying and creating knowledge, skills and understandings of themselves and their life-worlds.  相似文献   

4.
This paper reports a study of 384 13–14-year olds’ written responses to open-ended questions about their understanding of and relationship with ‘nature’. Using constant comparative method the responses were coded, categorised and themed. Most students held scientific conceptions of nature (excluding humans) and a utilitarian relationship with nature, a predominantly anthroprocentric worldview. A small number held aesthetic conceptualisations and an intrinsic value relationship: an ecocentric worldview. A substantial number of students however were neither anthroprocentric or ecocentric but rather expressed a conception of and relationship with nature which reflected aspects of Bonnett’s ‘human-related’ relationship (Bonnett, M. 2004. Retrieving Nature: Education for a Post-humanist Age. Oxford: Blackwell). The findings from this study challenge a simple binary approach in which students’ environmental worldviews would be analysed as either predominantly anthroprocentric or ecocentric. Bonnett’s ‘human-related’ relationship to nature reflects a more complex view of the world. Analysis revealed interesting differences, however, between students according to their urban/rural location, gender and school type.  相似文献   

5.
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6.
The aim of the study was to gain insight into undergraduate students’ environmental worldviews by exploring their ideas about nature and human–nature relationships. Participants were 29 students from a university in Taiwan. Interviews were employed as the dominant method, while a questionnaire survey was also used to support the sample selection and enhance the understanding of the interview data. Interview responses were analyzed using a phenomenographic approach and revealed a variation of students’ ideas. One key finding was that although the students were generally pro-ecological, their ideas about nature and human–nature relationships seemed to be often a mixture of worldview tendencies typically as follows: (1) humankind is part of nature and subject to natural laws, and thus cannot possibly destroy nature; (2) humankind plays a dominator role in nature, but can be ‘replaced’ by other species; and (3) humankind should take responsibility for nature in order to secure sufficient natural resources and a livable environment for all species, especially humans. Moreover, the students described and explained nature predominantly from a scientific perspective. The educational implications of the findings and limitations of the study are also discussed.  相似文献   

7.
Research in nature of science (NOS) among Asia-Pacific countries such as Singapore is arguably scarce. This study aimed to survey Singaporean secondary school students’ views of NOS with a newly developed instrument named Students’ Views of Nature of Science (SVNOS), which included various key aspects of NOS that are generally agreed upon by the science education community. Moreover, the relations between some demographic factors, including gender and grade, and students’ views of NOS were explored.

Sample, design and method

In total, 359 Singaporean seventh and eighth graders were invited to participate in this survey. The reliability, validity and structure of the SVNOS instrument were ensured by confirmatory factor analysis. A two-way multivariate analysis of variance was then conducted to determine the interaction effects between the gender variable and the grade-level variable.

Results and conclusion

The results indicated that the SVNOS instrument is reliable and valid to assess students’ views of NOS regarding seven distinct NOS dimensions. The male students were more prone to have constructivist-oriented views of NOS in the most of the SVNOS dimensions, while the female students conveyed more non-objective views of NOS. In addition, the eighth graders revealed more empiricist-oriented views of NOS than the seventh graders in several SVNOS dimensions. This result seems to contradict the results of previous studies that students’ views of NOS may reflect a developmental trend with their increasing educational experiences.  相似文献   

8.
Background: In Bangladesh, a common science curriculum caters for all students at the junior secondary level. Since this curriculum is for all students, its aims are both to build a strong foundation in science while still providing students with the opportunities to use science in everyday life – an aim consistent with the notion of scientific literacy.

Purpose: This paper reports Bangladeshi science teachers’ perspectives and practices in regard to the promotion of scientific literacy.

Sample: Six science teachers representing a range of geographical locations, school types with different class sizes, lengths of teaching experience and educational qualifications.

Design and method: This study employed a case study approach. The six teachers and their associated science classes (including students) were considered as six cases. Data were gathered through observing the teachers’ science lessons, interviewing them twice – once before and once after the lesson observation, and interviewing their students in focus groups.

Results: This study reveals that participating teachers held a range of perspectives on scientific literacy, including some naïve perspectives. In addition, their perspectives were often not seen to be realised in the classroom as for teachers the emphasis of learning science was more traditional in nature. Many of their teaching practices promoted a culture of academic science that resulted in students’ difficulty in finding connections between the science they study in school and their everyday lives. This research also identified the tension which teachers encountered between their religious values and science values while they were teaching science in a culture with a religious tradition.

Conclusions: The professional development practice for science teachers in Bangladesh with its emphasis on developing science content knowledge may limit the scope for promoting the concepts of scientific literacy. Opportunities for developing pedagogic knowledge is also limited and consequently impacts on teachers’ ability to develop the concepts of scientific literacy and learn how to teach for its promotion.  相似文献   

9.
ABSTRACT

This 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   

10.
In this study of the origins of individual differences in theory of mind (ToM), the Environmental Risk (E-Risk) Longitudinal Twin Study sample of 1,116 sixty-month-old twin pairs completed a comprehensive battery of ToM tasks. Individual differences in ToM were striking and strongly associated with verbal ability. Behavioral genetic models of the data showed that environmental factors explained the majority of the variance in ToM performance in this sample. Shared environmental influences on verbal ability had a common impact on ToM and explained more than half the phenotypic correlation between these two skills. Possible underlying proximal mechanisms are discussed, including maternal speech and mind-mindedness, sibling interactions, and peer influences.  相似文献   

11.
In this article, we report on the use of a teacher profiling instrument with 62 middle school teachers at the start of a 3-year professional learning programme. The instrument was designed to assess the aspects of teachers’ knowledge identified by Shulman (1987) refined by Ball et al. (2008) and extended to include teachers’ confidence to use and teach various topics in the middle school mathematics curriculum and their beliefs about mathematics teaching and learning. Based on a hierarchical coding of items, the application of the partial credit Rasch model revealed that the profile items were measuring a single underlying construct and suggested that the various facets of teacher knowledge develop together. We describe the characteristics of four levels of the hierarchical construct measuring teacher knowledge and understanding for teaching mathematics in the middle years of schooling, and discuss the unique affordances of a holistic view of teacher knowledge in contrast to considerations of multiple knowledge categories.  相似文献   

12.
The midsession reversal task involves a simple simultaneous discrimination that predictably reverses midway through a session. Under various conditions, pigeons generally both anticipate the reversal and perseverate once it has occurred, whereas rats tend to make very few of either kind of error. In the present research, we investigated the hypothesis that the difference in performance between rats and pigeons is related to the nature of the responses made. We hypothesized that rats could have been better at bridging the intertrial interval by keeping the relevant paw close to the lever while eating, whereas the pigeons had to remove their beak from the response key and insert it into the feeder, thus making it difficult to mediate the response last made. In the present experiment, in successive phases, rats were trained to leverpress or nose-poke on a 40-trial midsession reversal, an 80-trial midsession reversal, and a variable-location reversal. The results showed that the leverpress group acquired the task faster than the nose-poke group, but that both groups reached comparable levels of performance. Thus, the difference in the natures of the responses cannot fully account for the differences in accuracy between rats and pigeons. Additionally, differences in the types of errors made by the two groups suggest that the nature of the response plays different roles in the performance of this task.  相似文献   

13.
The purpose of this study was to investigate prospective mathematics teachers’ knowledge of common conceptions and misconceptions that sixth and seventh grade students had about multiplication of fractions. In addition, prospective teachers’ knowledge of the sources of these misconceptions and strategies they knew to overcome these misconceptions was examined. Data were collected from 17 Turkish prospective teachers at the end of the spring semester of the 2004–2005 academic year. A case study design was used in which data were collected through the Multiplication of Fractions Questionnaire and semi-structured interviews. The prospective teachers suggested many difficulties that elementary grade level students may have and stated that these difficulties stemmed from students’ lack of formal knowledge and rote memorization of the algorithms. In addition, the prospective teachers suggested many strategies that could be used to overcome these misconceptions or difficulties. These strategies could be grouped under three headings: strategies based on teaching methods, strategies based on formal knowledge of fractions, and strategies based on psychological constructs.  相似文献   

14.
Recent learning theories and the suggested importance of ‘interactive’ approaches in national initiatives, (NLS, NNS) led to an ESRC‐funded action research project involving the University of Exeter and teachers in three schools—‘Using Talk to Activate Learners’ Knowledge' (TALK). This investigated how ‘interactive’ whole class teaching was and whether teacher‐pupil interactions permitted recoding of information and understanding. The findings corroborate those from Galton (1999 Galton M Hargreaves L Comber C Wall D Pell T (1999a) Inside the primary classroom—20 years on (London, Routledge) [Crossref] [Google Scholar]a, 1999 Galton, M, Hargreaves, L, Comber, C, Wall, D and Pell, T. (1999b). Changes in patterns of teacher interaction in primary classrooms: 1976–1996. British Educational Research Journal, 25(1): 23–37. [Taylor & Francis Online] [Google Scholar]b), Mroz (2000 Mroz, M, Smith, F and Hardman, F. (2000). The discourse of the Literacy Hour. Cambridge Journal of Education, 30(3): 379–390. [Taylor & Francis Online] [Google Scholar]) and English (2002 English, E, Hargreaves, L and Hislam, J. (2002). Pedagogical dilemmas in the National Literacy Strategy: primary teachers' perceptions, reflections and classroom behaviour. Cambridge Journal of Education, 32(1): 9–26. [Taylor & Francis Online] [Google Scholar]): that teacher‐led questioning and explanation still dominate, as do teachers' objectives. Interaction as participation was differentially experienced by higher and lower abilities, boys and girls, with few opportunities for pupil initiation or extended response. The study, however, provides a model for more fully analysing the varying forms and functions of teachers' questions and statements which may lead to a greater clarity in recognising ways to provide more effective discourse for learning.  相似文献   

15.
The objective of this study is to facilitate progressive transitions in chemistry teachers understanding of nature of science in the context of historical controversies. Selected controversies referred to episodes that form part of the chemistry curriculum both at secondary and university freshman level. The study is based on 17 in-service teachers who had registered for an 11-week course on ‘Investigation in the teaching of chemistry’ as part of their Master’s degree program. The course is based on 17 readings drawing on a history and philosophy of science perspective with special reference to controversial episodes in the chemistry curriculum. Course activities included written reports, class room discussions based on participants’ presentations, and written exams. Based on the results obtained it is suggested that this study facilitated the following progressive transitions in teachers’ understanding of nature of science: (a) Problematic nature of the scientific method, objectivity and the empirical basis of science; (b) Myths associated with respect to the nature of science and teaching chemistry; (c) Science does not develop by appealing to objectivity in an absolute sense, as creativity and presuppositions also play a crucial role; (d) The role of speculation and controversy in the construction of knowledge based on episodes from the chemistry curriculum; (e) How did Bohr confirm his postulates? This goes beyond the treatment in most textbooks; (f) Differentiation between the idealized scientific law and the observations. It is concluded that given the opportunity to reflect, discuss and participate in a series of course activities based on various controversial episodes, teachers’ understanding of nature of science can be enhanced.  相似文献   

16.
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17.
People in industrialized countries may be losing their connection with nature. The Get to Know Program (Get to Know) is a multi-faceted program aimed at encouraging direct connection with nature through a variety of activities (observations of wildlife, hiking, creative arts, and special events), specifically among youth. Three studies assessed the effects of three Get to Know program activities on youth’s implicit connectedness with nature (measured using a computer based game). Participants were youth recruited from southern California schools or youth organizations. Participation in the Get to Know Program’s Creative Arts Contest was associated with increased implicit connectedness with nature. However, participation in the Get to Know Natural Treasure Adventure and Virtual Hike did not have an effect on connectedness with nature. Implications of these findings are important for agencies seeking to find effective tools for outreach focused on connecting participants with nature.  相似文献   

18.
This article describes an interview study on Finnish upper secondary school students' values of nature. Even if the Finnish adolescents' interest in nature has decreased, most of the interviewees in this study regarded nature as worthy of maintenance. They valued nature for its material, aesthetic, and recreational values, as well as its diversity and future value, and because of their holistic view of nature. The nature values of the students were complex. Therefore, we suggest education that supports their value development through deliberation, authentic involvement, and outdoor activities.  相似文献   

19.
Nature centers can serve as valuable community institutions if they are seen as providing important services to the community. Through survey research in communities surrounding 16 nature centers in the United States, we examine the attitudes, behaviors, and beliefs that drive hypothetical support for nature centers from local residents. Respondents who recognized centers as institutions that provide opportunities for leisure and connection with nature; contribute to civic engagement; and bolster local economies, community pride, and aesthetics reported the greatest likelihood of donating, volunteering, or responding to threats at local centers. Additional predictors of support included positive evaluations of staff members, perceptions of positive attitudes toward the center held by other community members, familiarity with center activities, pro-environmental attitudes, and past donation or volunteering. The findings highlight the potential returns for centers that expand their activities and operations beyond more traditional roles of providing nature-based outdoor recreation and environmental education experiences.  相似文献   

20.
Background: Scientific models have important roles in science and science education. For scientists, they provide a means for generating new knowledge or function as an accessible summary of scientific studies. In science education, on the other hand, they are accessible representations of abstract concepts, and are also organizational frameworks to teach and learn inaccessible facts. As being indispensable parts of learning and doing science, use of scientific models in science classes should be reinforced. At this point, uncovering pre-service science teachers’ (PSTs) understandings of scientific models are of great importance since they will design and conduct teaching situations for their students. Purpose: The study aimed to provide an answer to the research question: What understandings do PSTs possess about scientific models? Sample: The sample of the study consisted of 14 PSTs enrolled in an Elementary Science Education program in a public university in Ankara, Turkey. Design and methods: Data were collected by using an open-item instrument and semi-structured interviews, and were analyzed by using qualitative data analysis methods. Results: Findings showed that PSTs held fragmented views of models by having informed views in some aspects while having naïve views on others. That is, although they displayed a constructivist orientation by acknowledging the presence of multiple models for the same phenomenon depending on scientists’ perspectives or creativity involved in the production of scientific knowledge, PSTs also expressed logical positivist views by believing that models should be close to the real phenomena that they represent. Findings further revealed that PSTs generally conceptualized models’ materialistic uses, yet they did not think much about their theoretical and conceptual uses. It was observed that roles like reifying and visualizing were overestimated and models were dominantly characterized as three-dimensional representations. Conclusions: It is clear that PSTs, having difficulties in grasping the concept of models, would possibly have problems in planning their lessons effectively and would not develop accurate concepts in their students. These findings apparently support the need for appropriate pedagogic training of PSTs to scientifically reflect on and professionally make use of models in science classes.  相似文献   

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