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1.
The aim of the study was to investigate students’ views of model evaluation through the lens of personal epistemology. We developed an integrated analytical framework by combining a developmental framework, including absolutist, multiplist, and evaluatist, with a multi-dimensional framework, including limits of knowing, certainty of knowing, and criteria of knowing. Furthermore, we examined the potential influence of the question contexts and the students’ grade levels. A total of 188 secondary school students were surveyed. Students answered two sets of model evaluation questions based on two scientific contexts. After reading the information about the two models, the students had to choose from three epistemic assumptions and then provide written justifications explaining their choice of assumptions. Quantitative and qualitative analyses were conducted for the multiple-choice questions and the written responses. In both contexts there were higher percentages of 11th-grade students choosing the evaluatist assumptions than the eighth-grade students. For students choosing multiplist and evaluatist assumptions, the 11th-grade students were more likely than the eighth-grade students to think in terms of pragmatic and evidential criteria as the criteria of knowing. Different contexts of the questions evoked different views of model evaluation particularly regarding the limits of knowing. Four additional categories of epistemic levels also emerged from the data. This study provides a new framework for understanding students’ thinking about model evaluation. Implications and suggestions for future research are provided.
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In this case study a novel educational programme for students in preparatory vocational education was studied. The research questions were: (1) Which teaching/learning processes occur in a simulated workplace using the concept of a knowledge‐rich workplace? (2) What is the role of models and modelling in the teaching/learning processes? The curriculum project consisted of design and construction tasks. The students were collaboratively involved in the process of designing a tricycle for a real customer. This real‐life activity creates opportunities for students to develop and use models, which can be used in more than in one context. The case study explored how the teachers deal with the students’ explicit and implicit need for knowledge and skills. The main findings are that teachers more often provide this knowledge, rather than guide the students in reconstructing it, and towards the end of the project, knowledge tended to remain situated. 相似文献
3.
Imelda Caleon 《International Journal of Science Education》2013,35(7):939-961
This study focused on the development and application of a three‐tier multiple‐choice diagnostic test (or three‐tier test) on the nature and propagation of waves. A question in a three‐tier test comprises the content tier, which measures content knowledge; the reason tier, which measures explanatory knowledge; and the confidence tier, which measures the strength of conceptual understanding of the respondents. This paper presents results based on the responses of 243 Grade 10 students after they were formally instructed on the topic. The vast majority of the respondents showed an inadequate grasp of concepts about waves. Eleven alternative conceptions (ACs), which were expressed with confidence by more than 10% of the students, were identified; four of these ACs were expressed with high confidence. 相似文献
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Jerold S. Touger Robert J. Dufresne William J. Gerace Pamela T. Hardiman Jose P. Mestre 《International Journal of Science Education》2013,35(2):255-269
An extensive study was conducted of students’ explanations written in response to ‘what if...?’ questions in elementary mechanics. The study showed that the structure of students’ explanations yields roughly the same ranking of students as do problem‐solving tests, but in addition provides a wealth of insights into (1) context dependence and categorization in students’ use of concepts, (2) the effect of misconceptions on context dependence, and (3) the types of explanations that students tend to produce. A follow‐up study, in which students were presented with pairs of pre‐written explanations to ‘what if...?’ questions and asked to indicate a preference, showed that students do not necessarily prefer the types of explanations they write, and have greater difficulty assessing the correctness of explanations that are counter to preference type. Evidence is presented that, for many students, the links between physics thinking and real‐world thinking are all too tenuous. 相似文献
6.
Hannah Sevian Yehudit Judy Dori Ilka Parchmann 《International Journal of Science Education》2018,40(10):1095-1107
ABSTRACTContext-based learning (CBL) has influenced teaching and learning science in many countries over the past decades. Twelve years ago, a special issue on CBL was published in this Journal, focusing on CBL curriculum development. Seven papers in this current special issue on CBL now address the question of how a context influences the learning process. The papers focus on the stimulation of learning STEM subjects within contexts, how the learning process occurs and is enhanced, and the application of contexts in different settings. The approaches, results, and implications of the papers are located in a larger view that considers the question of what must be the case if a student not only engages in the tasks of learning but also succeeds at them. Concerning willingness and effort by learners, the papers draw conclusions about which STEM-related interests of students endure and are ephemeral across a decade, design criteria for maximising students’ situational interest, and students’ engagement with content and context simultaneously. Focusing on the opportunity to teach and learn, the papers reveal how a professional development approach functions to support STEM teachers to develop CBL materials, and how specific scaffolding acts in teaching bring students to more complex reasoning. Regarding good teaching, insights are offered on how metacognitive prompts improve teaching. Centring on the social surround that supports teaching and learning, a comparison of two contexts for teaching the same content reveals which aspects of the contexts move student learning forward. From this mapping, paths toward future research are projected. 相似文献
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Two focusing hypotheses were evaluated. First, do adjunct questions, focusing on science concepts and inserted after computer-animated sequences, selectively alter students' attentional or practice processing and thus produce differential learning effects? Theoretically, such questions selectively focus students' attention and enhance concept learning of focused concepts. Second, do these questions still provide enough metacognitive scaffolding to produce differential learning effects when only the first 8 out of 12 sequences are followed by focusing questions? Eighth-grade students (n = 160) were randomly assigned to a control group (lesson alone) or one of four treatment groups (lesson plus 12 questions focusing either on heat or on temperature, or lesson plus the same first 8 questions on heat or temperature followed by 4 placebo questions). Two significant two-way interactions with widely varying F ratios supported the differential focusing hypotheses (12 questions—more robust interaction, 8—less robust interaction). 相似文献
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Reviewing the differences in size,composition and structure between the personal networks of high‐ and low‐performing students 
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下载免费PDF全文 Oskar Casquero Ramón Ovelar Jesús Romo Manuel Benito 《British journal of educational technology : journal of the Council for Educational Technology》2015,46(1):16-31
An interesting aspect in the current literature about learning networks is the shift of focus from the understanding of the “whole network” of a course to the examination of the “personal networks” of individual students. This line of research is relatively new, based on small‐scale studies and diverse analysis techniques, which demands for more empirical research in order to contextualize the findings and to meta‐analyze the research methods. The main objective of this paper is to review two research questions posed by a previous British Journal of Educational Technology contribution by Shane Dawson in order to know whether the differences in personal network composition impact on the performance of students. The two questions were defined by Dawson as follows: (1) Are there significant differences in personal network composition between high‐ and low‐performing students? and (2) Do high‐performing students have larger personal networks than their low‐performing peers? In addition, the “clustered graphs” method used in this study allows the inclusion of the structural analysis of personal networks. In doing so, a new research question is addressed: (3) Are there significant differences in personal network structure between high‐ and low‐performing students? This paper tries to answer these questions in the context of two undergraduate, inter‐university and fully online courses, and two different technology‐enhanced learning environments (a virtual learning environment and a personal learning environment) where interactions took place indirectly through shared resources. The results show that the network behaviors of high‐ and low‐performing students' are strongly correlated, and that high‐performing students developed larger personal networks than low performers. 相似文献
9.
Given the globalization of science education and the different cultures between China and Germany, we tried to compare and explain the differences on teacher questions and real life instances in biology lessons between the two countries from a culture-related perspective. 22 biology teachers from China and 21 biology teachers from Germany participated in this study. Each teacher was videotaped for one lesson on the unit blood and circulatory system. Before the teaching unit, students’ prior knowledge was tested with a pretest. After the teaching unit, students’ content knowledge was tested with a posttest. The aim of the knowledge tests here was for the better selection of the four samples for qualitative comparison in the two countries. The quantitative analysis showed that more lower-order teacher questions and more real life instances that were introduced after learning relevant concepts were in Chinese lessons than in German lessons. There were no significant differences in the frequency of higher-order questions or real life instances that were introduced before learning concepts. Qualitative analysis showed that both German teachers guided students to analyze the reasoning process of Landsteiner experiment, but nor Chinese teachers did that. The findings reflected the subtle influence of culture on classroom teaching. Relatively, Chinese biology teachers focused more on learning content and the application of the content in real life; German biology teachers emphasized more on invoking students’ reasoning and divergent thinking. 相似文献
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Menno Wierdsma Kerst Th. Boersma Marie-Christine Knippels Bert van Oers 《International Journal of Science Education》2016,38(15):2388-2413
In many science education practices, students are expected to develop an understanding of scientific knowledge without being allowed a view of the practices and cultures that have developed and use this knowledge. Therefore, students should be allowed to develop scientific concepts in relation to the contexts in which those concepts are used. Since many concepts are used in a variety of contexts, students need to be able to recontextualise and transfer their understanding of a concept from one context to another. This study aims to develop a learning and teaching strategy for recontextualising cellular respiration. This article focuses on students’ ability to recontextualise cellular respiration. The strategy allowed students to develop their understanding of cellular respiration by exploring its use and meaning in different contexts. A pre- and post-test design was used to test students’ understanding of cellular respiration. The results indicate that while students did develop an acceptable understanding of cellular respiration, they still had difficulty with recontextualising the concept to other contexts. Possible explanations for this ack of understanding are students’ familiarity with the biological object of focus in a context, the manner in which this object is used in a context and students’ understanding of specific elements of cellular respiration during the lessons. Although students did develop an adequate understanding of the concept, they do need more opportunities to practice recontextualising the concept in different contexts. Further research should focus on improving the strategy presented here and developing strategies for other core concepts in science. 相似文献
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This study examined age differences in young people's understanding of evolution theory in secondary school. A second aim of this study was to propose a new coding scheme that more accurately described students’ conceptual understanding about evolutionary theory. We argue that coding schemes adopted in previous research may have overestimated students’ grasp of evolutionary concepts. A total of 106 students aged 12, 14, and 16 took part in individual interviews investigating their understanding of evolution. Using the new coding scheme, we found that while 16‐year olds were more likely than 12‐year olds to endorse scientific concepts when answering a question about finches, their understanding of natural selection, however, did not generalize to the other four questions. Furthermore, students began to incorporate relevant terminology (e.g., adapt, evolve, etc.) and structure their explanations using relevant language at around age 14. Students often used relevant terminology without having a more advanced understanding of evolutionary theory. Instead, they used the relevant terms in a colloquial rather than a scientific sense. Implications of the current findings for teaching and theory are discussed. © 2016 The Authors. Journal of Research in Science Teaching published by Wiley Periodicals, Inc. on behalf of National Association for Research in Science Teaching. J Res Sci Teach 54: 247–273, 2017 相似文献
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Cumulative and segmented learning: exploring the role of curriculum structures in knowledge‐building
Karl Maton 《British Journal of Sociology of Education》2009,30(1):43-57
The present article extends Basil Bernstein’s theorisation of ‘discourses’ and ‘knowledge structures’ to explore the potential of educational knowledge structures to enable or constrain cumulative learning, where students can transfer knowledge across contexts and build knowledge over time. It offers a means of overcoming dichotomies in Bernstein’s model by conceptualising knowledge in terms of legitimation codes (bases of achievement) and semantic gravity (context‐dependency of knowledge). This developed framework is used to analyse two contrasting examples of curriculum – from professional education at university and secondary school English – that aim to enable cumulative learning. Analyses of students’ work products show that both cases can constrain knowledge‐building by anchoring meaning within its context of acquisition. The basis for this potential is located in a mismatch between their aims of enabling students to learn higher‐order principles and their curricular means that focus on knowers’ dispositions rather than articulating principles of knowledge. 相似文献
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This article draws on data from a three‐year Australian Research Council‐funded study that examined the ways in which young children become numerate in the twenty‐first century. We were interested in the authentic problem‐solving contexts that we believe are required to create meaningful learning. This being so, our basic tenet was that such experiences should involve the use of information and communications technologies (ICT) where relevant, but not in tokenistic ways. This article highlights learning conditions in which young children can become numerate in contemporary times. We consider ‘academic’ or ‘school‐based’ mathematical tasks in the context of a Mathematical Tasks Continuum. This continuum was conceptualised to enable focused and detailed thinking about the scope and range of mathematical tasks that young children are able to engage within contemporary school contexts. The data from this study show that most of the tasks the children experienced in early years mathematics classes were unidimensional in their make up. That is, they focus on the acquisition of specific skills and then they are practiced in disembedded contexts. We suggest that the framework created in the form of the Mathematical Tasks Continuum can facilitate teachers’ thinking about the possible ways in which they could extend children’s academic work in primary school mathematics, so that the process of becoming numerate becomes more easily related to authentic activities that they are likely to experience in everyday life. 相似文献
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Tracey Papinczak Raymond Peterson Awais Saleem Babri Kym Ward Vaughan Kippers David Wilkinson 《Assessment & Evaluation in Higher Education》2012,37(4):439-452
In small groups, medical students were involved in generating questions to contribute to an online item bank. This study sought to support collaborative question‐writing and enhance students’ metacognitive abilities, in particular, their ability to self‐regulate learning and moderate understanding of subject material. The study focused on supporting students to write questions requiring higher order cognitive processes. End‐of‐year formal examinations comprised 25% student‐generated questions (SGQs), while mid‐year examination items were completely unseen. Data were gathered from repeated administration of a questionnaire and from examination results. No statistically significant changes were identified in self‐rated monitoring of understanding and regulation of learning. The activity of generating questions supported students to work collaboratively in developing questions and answers. The bank of questions was appreciated by students as a source of revision material, even though it was not strongly focused on higher order processes. Based on scores, it would appear that many students chose to memorise the question bank as a ‘high‐yield’ strategy for mark inflation, paradoxically favouring surface rather than deep learning. The study has not identified directly improvements in metacognitive capacity and this is an area for further investigation. Continual refinement of the study method will be undertaken, with an emphasis on education of students in developing questions addressing higher order cognitive processes. Although students may have memorised the questions and answers, there is no evidence that they do not understand the information. 相似文献
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Romaizah Salleh Grady J. Venville David F. Treagust 《Research in Science Education》2007,37(3):291-312
With increasing numbers of students learning science through a second language in many school contexts, there is a need for
research to focus on the impact language has on students’ understanding of science concepts. Like other countries, Brunei
has adopted a bilingual system of education that incorporates two languages in imparting its curriculum. For the first three
years of school, Brunei children are taught in Malay and then for the remainder of their education, instruction is in English.
This research is concerned with the influence that this bilingual education system has on children’s learning of science.
The purpose was to document the patterns of Brunei students’ developing understandings of the concepts of living and non-living
things and examine the impact in the change in language as the medium of instruction. A cross-sectional case study design
was used in one primary school. Data collection included an interview (n = 75), which consisted of forced-response and semi-structured interview questions, a categorisation task and classroom observation.
Data were analysed quantitatively and qualitatively. The results indicate that the transition from Malay to English as the
language of instruction from Primary 4 onwards restricted the students’ ability to express their understandings about living
things, to discuss related scientific concepts and to interpret and analyse scientific questions. From a social constructivist
perspective these language factors will potentially impact on the students’ cognitive development by limiting the expected
growth of the students’ understandings of the concepts of living and non-living things.
A paper accepted by Research in Science Education, August, 2006. 相似文献
16.
Eileen Carlton Parsons 《科学教学研究杂志》2008,45(6):665-683
As other countries vigorously promote rapid advancement in science, optimizing the participation of all students in the United States in science is imperative. This study focused on African American students and examined their science achievement in relation to Black Cultural Ethos (BCE), a construct rooted in psychology. Via qualitative and quantitative data obtained from a non‐random control group design, the study addressed three questions: (1) With respect to BCE, what characterizes the natural instructional contexts of two middle school science teachers? (2) What characterizes the achievement of African American students in contexts that incorporate BCE and contexts that do not? (3) What achievement patterns, if any, exist in BCE and non‐BCE instructional contexts? With regard to the natural contexts, the teachers did not incorporate BCE even when the opportunities were available to do so. Within these non‐BCE contexts, the group's mean scores on the study‐specific test that aligned with instruction decreased from pretest to posttest with approximately one‐third of the students' scores improving. When a context was altered with a moderate effect size of 0.47 to include BCE, the group's mean scores on the aforementioned test increased from pretest to posttest with two‐thirds of the students' scores improving. An illustration of the interplay between BCE and context and a consideration of the interplay as a mediating factor in research involving African American students encapsulate the significance and implications of the study's findings. © 2008 Wiley Periodicals, Inc. J Res Sci Teach 45: 665–683, 2008 相似文献
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Recently, the importance of ill‐structured problem‐solving in real‐world contexts has become a focus of educational research. Particularly, the hypothesis‐development process has been examined as one of the keys to developing a high‐quality solution in a problem context. The authors of this study examined predictive relations between young adolescents' metacognition, prior domain knowledge, and hypothesis‐development performance in a computer‐supported environment. Data were collected from 11‐ and 12‐year‐old Korean students (N = 101). A hypothesised model in predicting hypothesis‐development performance was evaluated using structural equation modelling. Both metacognition and prior domain knowledge significantly predicted young adolescents' hypothesis‐development performance. Implications and limitations of the present study and issues, including the experimental design, are discussed. 相似文献
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A traditional classroom usually focuses on concepts from a specific discipline. However, solving complex real‐world problems requires integration and application of knowledge from various fields. Here, we describe a 4‐hr undergraduate‐level laboratory exercise that utilizes concepts of extraction and biological property, bridging between chemistry and microbiology courses. In the first half of this exercise, students performed hydrodistillation to extract essential oil from a locally available herb, lemongrass (Cymbopogon citratus, Stapf). In the second half, students investigated the potential antimicrobial activity of the extracted oil against various microorganisms using the Kirby–Bauer disk diffusion method. Students also developed their own experimental questions based on the extracted oil and the antimicrobial testing technique. Self‐assessment questionnaire shows students’ appreciation of the experiments and substantial learning gains in the extraction process, properties of the extracts, and antimicrobial activity testing. This laboratory exercise prompts students to formulate their own experimental questions and engages students in interdisciplinary experimentation. 相似文献
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Students' questions and discursive interaction: Their impact on argumentation during collaborative group discussions in science 总被引：1，自引：1，他引：0
This study investigated the potential of students' written and oral questions both as an epistemic probe and heuristic for initiating collaborative argumentation in science. Four classes of students, aged 12–14 years from two countries, were asked to discuss which of two graphs best represented the change in temperature as ice was heated to steam. The discussion was initiated by asking questions about the phenomenon. Working in groups (with members who had differing viewpoints) and guided by a set of question prompts, an argument sheet, and an argument diagram, students discussed contrasting arguments. One group of students from each class was audiotaped. The number of questions written, the concepts addressed, and the quality of written arguments were then scored. A positive correlation between these factors was found. Discourse analysis showed that the initial focus on questions prompted students to articulate their puzzlement; make explicit their claims and (mis)conceptions; identify and relate relevant key concepts; construct explanations; and consider alternative propositions when their ideas were challenged. Productive argumentation was characterized by students' questions which focused on key ideas of inquiry, a variety of scientific concepts, and which made explicit reference to the structural components of an argument. These findings suggest that supporting students in productive discourse is aided by scaffolding student questioning, teaching the criteria for a good argument, and providing a structure that helps them to organize and verbalize their arguments. © 2009 Wiley Periodicals, Inc. J Res Sci Teach 47:883–908, 2010 相似文献
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Jeannie L. Pridmore Randy V. Bradley Nikhil Mehta 《Decision Sciences Journal of Innovative Education》2010,8(2):289-311
In introductory information technology (IT) courses, communicating technical concepts so that they can be comprehended by all students, technical and nontechnical, has been a concern. Another challenge in such courses is to teach the real‐world applicability of technical concepts. In this conceptual article, we focus on a relatively unexplored issue in IT education—which instructional method is more effective in improving the learning outcomes of all students taking introductory IT courses. In doing so, we consider two instructional methods, lecture and multimedia case studies, and argue that either of these instructional methods, adopted singly, will be perceived by students as less effective in accomplishing learning outcomes than adopting a combination of the two instructional methods. Our arguments both augment existing knowledge about the differential influence of lecture and multimedia case studies on students’ learning outcomes and questions the wisdom of adopting either of these methods singly in introductory IT courses. We derive insights from the literature and anecdotal evidence, presented as four propositions, which illustrate the relationship between the two instructional methods and the specific learning outcomes students perceive they affect. 相似文献