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1.
The main objectives of this study are to: (a) to investigate students' and teachers' beliefs about the nature of science; (b) to explore the relationship among the students' and teachers' beliefs; and (c) to carry out a rational reconstruction of students' and teachers' beliefs based on a Lakatosian perspective of the history and philosophy of science. Eighty-nine freshman students and 7 chemistry teachers at the Instituto Universitario de Tecnología, El Tigre (Venezuela) were asked to respond to a 4-item questionnaire. Students' and teachers' responses were classified as positivist, transitional or Lakatosian. Most of the students and teachers responded with a very similar positivist approach. Epistemological beliefs of students and teachers in this study can be summarized as follows: a scientific theory has not been proved in its totality, whereas a scientific law has not only been proved, but is also universal, and furthermore, a theory tells us about more complex and explicit things. In view of the Lakatosian interpretation that the conflict is not between theories and laws, but rather between an interpretative and an explanatory theory, it is concluded that science teachers reconsider the dichotomous presentation of scientific progress found in most text books, in terms of theories and laws.  相似文献   

2.
Kuhn (1970) considered textbooks to be good 'pedagogical vehicles' for the perpetuation of ‘normal science’. Collins (2000) has pointed out a fundamental contradiction with respect to what science could achieve (create new knowledge) and how we teach science (authoritarian). Despite the reform efforts, students still have naïve views about the nature of science. Textbook analyses show almost a complete lack of understanding of the role played by presuppositions, contradictions, controversies and speculations in scientific progress. A possible solution to the contradiction pointed out by Collins is provided by the comparison of teaching approaches based on Kuhnian and Lakatosian perspectives of history and philosophy of science. It appears that the Kuhnian approach leaves out what really happens, that is the 'how' and 'why' of scientific progress. On the other hand, the Lakatosian perspective would enable students to understand that scientific progress is subsumed by a process that involves conflicting frameworks (dispute in science, according to Collins, 2000), based on processes that require the elaboration of rival hypotheses and their evaluation in the light of new evidence. It is plausible to suggest that the teacher by 'unfolding' the different episodes (based on historical reconstructions) can emphasize and illustrate how science actually works (tentative, controversial, rivalries, alternative interpretations of the same data), and this will show to the students that they need to go beyond ‘normal science’ as presented in their textbooks.  相似文献   

3.

In this study, we identified middle school and college students' prior ideas about electrostatic induction and interviewed them through presenting observational evidence which supported or refuted their own prior ideas. Their responses to the evidence were interpreted from perspectives based on philosophies of science, especially the Popperian and Lakatosian views of scientific hypothesis testing. In the process of confirmation, almost all of the students showed a logical error known as an 'error of affirmation of the consequent' in a syllogism. The students' falsification processes were classified into two groups: those which rejected the hard core of prior ideas, and those which modified the students' protective belt of auxiliary ideas related to the hard core while still preserving the hard core. From an analysis of the students' falsification processes, it was found that the Lakatosian rather than the Popperian view was more acceptable in understanding the students' responses to the conflicting evidence. It was observed that the quality of the understanding of auxiliary ideas should also play an important role in the changing of core concepts.  相似文献   

4.
Korean students have shown relatively little interest and confidence in learning science, despite being ranked in the top percentile in international evaluations of academic achievement in science such as the Trends in International Mathematics and Science Study. Although research indicates a positive relationship between student perceptions of science and their science learning, this area has not been sufficiently explored in Korea. Particularly, even though both students' perceptions of scientific practice and their understanding of the nature of science (NOS) are influenced by their science learning experiences at schools, little research examines how this perception, understanding, and experience are related to one another. This study aimed to uncover Korean students' perceptions of school scientific practice through exploring their drawings, writings, and responses to questionnaires. Participants were 500 Korean students in 3rd, 7th, and 10th grades who were asked to complete an open-ended questionnaire. The results indicated that Korean students typically viewed school scientific practices as experimental activities or listening to lecture; and that most participants held an insufficient understanding of the NOS. Overall, no significant relationship emerged between students' perceptions of school scientific practice and their understanding of the NOS. Our findings highlight the need to help both teachers and students understand the potential breadth of school scientific practices, beyond simple ‘activity mania.’ This study also suggests that teachers must balance implicit and explicit instructional approaches to teaching about the NOS through scientific practices in school science contexts.  相似文献   

5.

Science learning is inextricably tied to two aspects of students’ lives: literacy and culture. While English Learners (ELs) who speak a non-English native language are typically the focus in this line of scholarly inquiry, deaf and hard-of-hearing (DHH) students occupy a distinct space in this conversation. For DHH learners, literacy levels can be hindered by an early dependence on a more survival-based language learning model that postpones basic scientific inquiry. The vocabulary for curiosity is limited, which in turn affects the educational culture. DHH learners have a unique culture that demands an appropriate science curriculum, which thus far has not been explored or attempted for either DHH learners or their educators. Data collected consisted of interviews with teachers of DHH students, as well as observational data collected from a high-minority urban K-8 school for DHH students. The analysis revealed that, first, many of the teachers had limited preparation to teach science content. Second, DHH teachers used inconsistent instructional strategies ranging from drawing pictures to building models. Third, the modifications provided to DHH science learners were mostly limited to visual support and repetition. Implications for teacher education programs include instruction focused on specific supports for DHH students and co-teaching methods, and deeper investigation of inquiry-based science practices. Implications for classroom practices include providing hands-on, inquiry-based instruction, working closely with parents, and developing students’ and teachers’ understanding of scientific inquiry.

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6.
Background: Kuhn’s model of science has been widely influential, but in this paper, it is argued that it is more appropriate to consider constructivist learning within science education as a research program in the sense used by Lakatos.

Purpose/Hypothesis: This study offers teaching strategies and their corresponding instructional sequences based on Lakatosian Methodology, and examines the effects of a Lakatosian Conflict Map using pre-service elementary teachers’ conceptual understandings of the causes of seasons.

Design/Method: The Lakatosian Conflict Map was applied to concepts of seasonal change held by pre-service elementary teachers.

Results: Most pre-service elementary teachers consistently protect their hard-core beliefs about seasonal change by offering auxiliary hypotheses related to earth’s elliptical orbit and the tilt of its rotational axis in response to activities designed to promote conceptual change around knowledge related to the cause of the seasons. Specifically, the critical event rather than the discrepant event in the Lakatosian Conflict Map was conducted in a Lakatosian conflict group and these students were allowed to explicitly express their representations about the phenomena derived from these events. The result of this study is that instruction using the new Lakatosian Conflict Map produced more favorable outcomes in terms of conceptual change than traditional instruction.

Conclusions: This research concludes that the Lakatosian Conflict Map can help science teachers and students resolve the conflicts between students’ existing ideas and target scientific concepts.  相似文献   


7.
This paper traces the professional growth of science teachers in Trinidad and Tobago through their involvement in the production of context-based resource materials relevant to the lives of their students during workshop sessions. Grounded theory methods were used to analyse pre- and post-workshop questionnaire responses, tape-recorded group discussions and several draft lesson outlines. The findings show that professional growth is indicated by changes in the nature of the contexts chosen as lesson foci, the role of these contexts in the overall lesson design, and teachers' perceptions of contextualised teaching. Conflicts between students' cultural and scientific understandings were not addressed by these teachers.  相似文献   

8.
The study examined US elementary teachers’ knowledge and practices in four key domains of science instruction with English language learning (ELL) students. The four domains included: (1) teachers’ knowledge of science content, (2) teaching practices to promote scientific understanding, (3) teaching practices to promote scientific inquiry, and (4) teaching practices to support English language development during science instruction. The study was part of a larger five‐year research and development intervention aimed at promoting science and literacy achievement of ELL students in urban elementary schools. It involved 32 third grade, 21 fourth grade, and 17 fifth grade teachers participating in the first‐year implementation of the intervention. Based on teachers’ questionnaire responses and classroom observation ratings, results indicated that (1) teachers’ knowledge and practices were within the bounds of acceptability but short of reform‐oriented practices and (2) grade‐level differences existed, especially between Grades 3 and 5.  相似文献   

9.
Understanding nature of science (NOS) is considered critical to the development of students’ scientific literacy. However, various studies have shown that a large number of elementary and secondary science teachers do not possess an adequate understanding of NOS. This study investigated how elementary teachers’ understanding of NOS was impacted through a 1-year professional development program in Chile that included NOS instruction as a theme throughout two types of mini-courses in the program. Twelve teachers attended a 1-year development program focused on improving teacher content knowledge and included the instruction of NOS embedded in two self-contained NOS mini-courses (36 h) and two lessons (3 h each) within five science content mini-courses (30 h). The Views of NOS (version D+) questionnaire and interviews were used to assess teachers’ understanding of NOS at the beginning (January) and end of the program (December). Elementary teachers’ understanding of the creative, inferential, and tentative aspect of NOS showed improvement. According to the teachers’ perceptions, the most significant activities for improving their NOS understanding were decontextualized activities in both types of mini-courses (self-contained NOS and science content mini-courses). The implications for professional development programs are also discussed.  相似文献   

10.
发展教师教学行为的行动研究   总被引：1，自引：0，他引：1  
理科教师要具有相应的科学本质教学行为。通过行动研究的方法对发展理科教师教学行为的途径和方法的研究发现:教师理解科学本质教育的价值是自主发展科学本质教学行为的前提;教学行为的范例水平影响着教师教学行为的发展;WWHW思考模型能够有效提升教师的认识论水平,进一步深化教师对知识内容及其科学本质的理解,促进教师科学本质教学行为的发展;科学本质教学行为自我监控系统对于理科教师科学本质教学行为发展能够起到有效的监控作用。  相似文献   

11.
The purpose of this study was to develop a questionnaire that could measure preservice mathematics teachers' mathematics educational values. Development and validation of the questionnaire involved a sequential inquiry in which design principles were established from the existing literature and a pool of items was constructed then submitted to experts for consideration of the construct validity. Alterations to the items based on their suggestions were made to produce a trial version of the questionnaire. A pilot study involving preservice mathematics teachers explored the validity and usefulness of the questionnaire. The pilot results were used to revise the questionnaire that was administered to a sample of preservice mathematics teachers attending Cumhuriyet University, Sivas, Turkey. Further explorations of the construct and structural validity, item contributions, and reliability were achieved by using a factor analysis and two different item analysis methods. Results revealed that the questionnaire included four factors, satisfactory item contributions, and acceptable internal consistency. One result obtained in this study suggested that some mathematics education values based on Western culture (e.g., accessibility–special) have not been accepted by Turkish preservice mathematics teachers.  相似文献   

12.
用问卷调查、访谈、二手资料分析等方法对云南广播电视大学教师的科研意识及能力现状进行了调查和分析,可以看出部分教师存在对科研缺乏正确的认识、对远程教育的科研动态关注较少、在实施科研的具体能力上有所欠缺等问题,应从学校和教师两方面共同改进以提高云南广播电视大学科研的整体水平。  相似文献   

13.
Researchers have shown that most students resist changes to their core beliefs by offering auxiliary hypotheses at the first sign of the development of conceptual change. Studies have viewed student reaction to discrepant events as an important clue in helping researchers understand not only the structure of alternative concepts (Niaz, Science & Education, 7(2):107 – 127, 1998) but also the nature of scientific concepts. The main objectives of this research were the following: (a) to consider prudently the conflict map of Tsai (International Journal of Science Education, 22(3):285 – 302, 2000); (b) to initiate and develop an enhanced conflict map based on Lakatosian ethodology, which could help science teachers and students resolve conflicts that occur in the explanation of natural phenomena; (c) to examine the effectiveness of the enhanced conflict map; and (d) to discuss these implications in science education. Specifically, this study used two freshman classes from the Department of Electronics and one class of Astronomy majors from C. National University, South Korea, to investigate how scientific concepts change after selecting the modern physics field (Photoelectric effect), which is included in the Physics and Astronomy courses. Modern physics has led to the so-called Lakatosian heuristic principle or methodology, a useful framework that includes scientific philosophy and science history as study strategies. “Enhanced conflict maps” are suggested for use to consistently show all the study processes.  相似文献   

14.
The main objective of this article is to provide a framework, based on a critical appraisal of the philosophy of science, that could help science educators to choose between domain-specific and domain-general strategies for enhancing the thinking skills of their students. Recent literature has emphasized that one of the most pervasive features of scientific practice is that of gathering evidence by making observations and conducting experiments. Research suggests that children do manifest, in a rudimentary form, the scientific thinking skills of raising causal questions, generating hypotheses and conducting experiments in order to test hypotheses, and that these skills increase progressively with age. It is concluded that we should not in the science classroom, emphasize only domain-specific knowledge. Absence of a single scientific method provides the occasion to shift from one method to another, thus facilitating competing frameworks of understanding. Evidence is provided to show that emphasizing domain specific (content) over domain general knowledge is consistent with a Kuhnian perspective of normal science. On the other hand, adopting the Lakatosian perspective would enable the students to understand that scientific progress goes through a process of conflicting frameworks, based on processes that require elaboration of rival hypotheses and their evaluation. It is concluded that the content-process dichotomy is misleading as the two approaches to teaching science would rather complement each other.  相似文献   

15.
The purpose of this study was to examine whether Socioscientific Issues (SSI) based learning environments affect university students’ epistemological understanding of scientific inquiry differently from traditional science educational contexts. We identify and compare conceptions of scientific inquiry of students participating in an interdisciplinary, SSI-focused undergraduate human biology major (SSI) and those participating in a traditional biology major (BIO). Forty-five SSI students and 50 BIO students completed an open-ended questionnaire examining their understanding of scientific inquiry. Eight general themes including approximately 60 subthemes emerged from questionnaire responses, and the numbers of students including each subtheme in their responses were statistically compared between groups. A subset of students participated in interviews, which were used to validate and triangulate questionnaire data and probe students’ understanding of scientific inquiry in relation to their majors. We found that both groups provided very similar responses, differing significantly in only five subthemes. Results indicated that both groups held generally adequate understandings of inquiry, but also a number of misconceptions. Small differences between groups supported by both questionnaires and interviews suggest that the SSI context contributed to nuanced understandings, such as a more interdisciplinary and problem-centered conception of scientific inquiry. Implications for teaching and research are discussed.  相似文献   

16.
Despite a growing consensus regarding the value of inquiry-based learning (IBL) for students’ learning and engagement in the science classroom, the implementation of such practices continues to be a challenge. If science teachers are to use IBL to develop students’ inquiry practices and encourage them to think and act as scientists, a better understanding of factors that influence their attitudes towards scientific research and scientists’ practices is very much needed. Within this context there is a need to re-examine the science teachers’ views of scientists and the cultural factors that might have an impact on teachers’ views and pedagogical practices. A diverse group of Egyptian science teachers took part in a quantitative–qualitative study using a questionnaire and in-depth interviews to explore their views of scientists and scientific research, and to understand how they negotiated their views of scientists and scientific research in the classroom, and how these views informed their practices of using inquiry in the classroom. The findings highlighted how the teachers’ cultural beliefs and views of scientists and scientific research had constructed idiosyncratic pedagogical views and practices. The study suggested implications for further research and argued for teacher professional development based on partnerships with scientists.  相似文献   

17.
Enactment of scientific inquiry in classroom has attracted a great attention of science educators around the world. In this study, we examined two competent teachers’ (one Grade 9 chemistry teacher and one Grade 4 science teacher) enactment of scientific inquiry in selected teaching units to reveal the characteristics of enacted inquiry at different grade levels by analyzing lesson sequence videos. The coding schemes for enacted inquiry consist of ontological properties and instructional practices. Pre-topic and post-topic teacher interviews and the two teachers’ responses to a questionnaire were adopted to identify the factors influencing teacher’s enactment. The results indicate that the two case teachers’ enactment involved a range of inquiry activities. The enacted inquiry at fourth-grade level covered all the inquiry elements, tending to engage students in the whole procedure of inquiry. The ninth-grade chemistry class placed emphasis on the elements “making plans” to solve problems in authentic context. Important factors influencing the enactment include teacher’s understanding about scientific inquiry, textbooks, assessment, students and resource. Implications for inquiry enactment and instruction improvement have been provided.  相似文献   

18.
A multiple regression analysis of the relationship between prospective teachers' scientific understanding and Gender, Education Level (High School, College), Courses in Science (Biology, Chemistry, Physics, Earth Science, Astronomy, and Agriculture), Attitude Towards Science, and Attitude Towards Mathematics is reported. Undergraduate elementary science students (N = 176) in an urban doctoral-level university in the United States participated in this study. The results of this study showed Gender, completion of courses in High School Chemistry and Physics, College Chemistry and Physics, and Attitudes Toward Mathematics and Science significantly correlated with scientific understanding. Based on a regression model, Gender, and College Chemistry and Physics experiences added significant predictive accuracy to scientific understanding among prospective elementary teachers compared to the other variables.  相似文献   

19.
This article reports the results of a survey of special education teachers in New York State regarding state regulations for resource and special class programs. Three hundred and fifty-seven special education teachers in 31 randomly selected school districts responded to a questionnaire. Results indicated that the majority of districts were in compliance with the regulations the survey addressed; however, 13% to 31% of the teachers' responses indicated noncompliance with specific regulations in some school districts. Other problems in special education programs were also identified in the survey.  相似文献   

20.
Previous research has demonstrated the potential of examining log-file data from computer-based assessments to understand student interactions with complex inquiry tasks. Rather than solely providing information about what has been achieved or the accuracy of student responses (product data), students' log files offer additional insights into how the responses were produced (process data). In this study, we examined students' log files to detect patterns of students' interactions with computer-based assessment and to determine whether unique characteristics of these interactions emerge as distinct profiles of inquiry performance. Knowledge about the characteristics of these profiles can shed light on why some students are more successful at solving simulated inquiry tasks than others and how to support student understanding of scientific inquiry through computer-based environments. We analyzed the Norwegian PISA 2015 log-file data, science performance as well as background questionnaire (N = 1,222 students) by focusing on two inquiry tasks, which required scientific reasoning skills: coordinating the effects of multiple variables and coordinating theory and evidence. Using a mixture modeling approach, we identified three distinct profiles of students' inquiry performance: strategic, emergent, and disengaged. These profiles revealed different characteristics of students' exploration behavior, inquiry strategy, time-on-task, and item accuracy. Further analyses showed that students' assignment to these profiles varied according to their demographic characteristics (gender, socio-economic status, and language at home), attitudes (enjoyment in science, self-efficacy, and test anxiety), and science achievement. Although students' profiles on the two inquiry tasks were significantly related, we also found some variations in the proportion of students' transitions between profiles. Our study contributes to understanding how students interact with complex simulated inquiry tasks and showcases how log-file data from PISA 2015 can aid this understanding.  相似文献   

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