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A large scale study involving 1786 year 7–10 Korean students from three school districts in Seoul was undertaken to evaluate their understanding of basic optics concepts using a two‐tier multiple‐choice diagnostic instrument consisting of four pairs of items, each of which evaluated the same concept in two different contexts. The instrument, which proved to be reliable, helped identify several context‐dependent alternative conceptions that were held by about 25% of students. At the same time, students’ performance on the diagnostic test correlated with the location of the schools, students’ achievement in school science and their attitudes to science learning. However, students’ grade levels had limited influence on their understanding of basic concepts in optics as measured by the instrument.  相似文献   

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The physics and chemistry education literature has grappled with an appropriate definition for the concept of heat for the past four decades. Most of the literature promotes the view that heat is ‘energy in transit’ or ‘involves the transfer of energy’ between the system and surroundings because of a difference in temperature. Given that many undergraduate students are not learning the concept of heat in physics and chemistry alone, the goal of this investigation is to explore the conceptions of heat as presented in textbooks from across the science disciplines. An analysis of the definitions of heat from physics, chemistry, the biological sciences and the earth sciences showed a significant variation in the definitions within a discipline and between the disciplines. Specifically, the physics and chemistry textbooks used ‘energy in transit’ or ‘transfer of energy’ definitions (Class I), whereas textbooks from other disciplines typically used definitions which relate heat to ‘molecular kinetic energy’ (Class II) or they used a hybrid of Class I and II definitions. Although a universal definition of heat across disciplines may not be possible (or even desirable), we suggest that discrepancies in definitions be acknowledged and clearly communicated to students.  相似文献   

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ABSTRACT

This cross-sectional study explored students’ conceptions of science learning via drawing analysis. A total of 906 Taiwanese students in 4th, 6th, 8th, 10th, and 12th grade were asked to use drawing to illustrate how they conceptualise science learning. Students’ drawings were analysed using a coding checklist to determine the presence or absence of specified attributes. Data analysis showed that the majority of students pictured science learning as school-based, involving certain types of experiment or teacher lecturing. In addition, notable cross-sectional differences were found in the ‘Activity’ and ‘Emotions and attitudes’ categories in students’ drawings. Three major findings were made: (1) lower grade level students conceptualised science learning with a didactic approach, while higher graders might possess a quantitative view of science learning (i.e. how much is learned, not how well it is learned), (2) students’ positive and negative emotions and attitudes toward science learning reversed around middle school, and (3) female students expressed significantly more positive emotions and attitudes than their male counterparts. In conclusion, higher graders’ unfruitful conceptions of science learning warrant educators’ attention. Moreover, further investigation of girls’ more positive emotions and attitudes found in this study is needed.  相似文献   

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This study focuses on elucidating and explaining reasons for the stability of and interrelationships between students’ conceptions about Light Propagation and Visibility of Objects using contextualized questions across 3 years of secondary schooling from Years 7 to 9. In a large-scale quantitative study involving 1,233 Korean students and 1,149 Singaporean students, data were analyzed from responses to the Light Propagation Diagnostic Instrument consisting of four pairs of items, each of which evaluated the same concept in two different problem situations. Findings show that only about 10–45 % of students could apply their conceptions of basic optics in contextualized problem situations giving rise to both stable and unstable alternative conceptions. Students’ understanding of Light Propagation concepts compared with Visibility of Objects concepts was more stable in different problem situations. The concepts of Light Propagation and Visibility of Objects were only moderately correlated. School grade was not a strong predictive variable, but students’ school achievement correlated strongly with their conceptual understanding in optics. The teaching and learning approach and education systems in the two countries may have had some influence on students’ conceptual understanding.  相似文献   

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The aim of the present study is to shed light on the conceptions that young students have of heat and temperature, concepts that are both important in school science curricula and closely related to daily life. The subjects of the study were students from a rural district in South Korea and they ranged in age from 4 to 11 years. Interviews were conducted with each student on the basis of questions on temperature, thermal insulation, and heat equilibrium. After calculating the frequency and percentage of student responses and analyzing the rationale for their answers, it was found that younger students tended to view temperature as “size” or a “summation of numbers.” This tendency gradually diminished in older students. Most students had alternative conceptions of thermal insulation regardless of age; however, reasoning differed according to age. Younger students displayed a greater tendency to view insulation as a material property, whereas older students showed a greater tendency toward rational heat and temperature conceptions. Most students did not have clear concepts of heat equilibrium regardless of age, but possessed numerous alternative conceptions. © 2007 Wiley Periodicals, Inc. J Res Sci Teach 44: 284–302, 2007  相似文献   

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Upon completion of a science unit on heat and temperature, the students in a Canadian 9th grade science class wrote two different achievement tests. On a unit test which required students to answer questions that were based on facts students had studied, grades obtained by girls and boys were not significantly different. Conversely, on a post‐test, which required that students apply their knowledge to novel situations, boys achievement was significantly greater than that of the girls, particularly on higher level questions. Classroom observations revealed that few girls contributed to class discussions, whereas most of the boys participated in discussions. It is suggested that the more active class participation by boys may have contributed to their making greater gains in the understanding of heat and temperature concepts.  相似文献   

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The present study challenges the assumption that cultural capital benefits students' academic achievement regardless of their educational stages. Meta-analytic results from 105 studies published 2000–2017 indicated that nine cultural capital variables (e.g., home educational resources, maternal and paternal education, parental expectations, cultural participation, home support, school participation) benefited all students while five cultural capital variables exhibited a differentiated pattern of relationship with student achievement depending on educational stages. First, compared to students from higher grade levels, kindergarteners benefited most from parental education, parental academic emphasis, and parent-child reading. Second, compared to 1st–6th graders, 7th-12th graders benefited more from academic discussions. Third, compared to 1st–6th graders, both kindergarteners and 7th-12th graders benefited from parental school involvement. These results provide compelling evidence that while there are some forms of cultural capital that all students will benefit from, there are others whose association with students’ achievement depends on their educational stages.  相似文献   

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ABSTRACT

This article focuses on ‘transition’ and how it is understood within higher education. Drawing on data from concept map-mediated interviews at two institutions, we examine the conceptions of transition held by academic and professional staff, who work to support students’ learning into and through higher education. We suggest that normative understandings of transition often draw upon a grand-narrative that orchestrates and reiterates a stereotypic understanding of students’ experiences. Often this narrative involves students’ interpellation into a field of discourse where the subject is constructed as both homogeneous and in deficit: ill-prepared, lacking in independence, as vulnerable and in need of support. However, this study suggests that beneath this discourse lies a more nuanced picture: one where students’ experiences can be conceptualised as diverse and fluid. Moreover, we employ the concept of pedagogic ‘frailty’ to expose the significance of the environments and wider contexts in which students ‘transition’, and to explore the impact of systemic tensions upon students’ experiences. This article further argues that future research should shift discussions away from the deficits of students, and examine how we can make underlying environmental and systemic challenges more explicit, in order to widen our understanding and discussions of these constraints.  相似文献   

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It is currently considered imperative to introduce reading instruction as early as possible. This proposition was tested by assigning groups of kindergarteners (N = 256) to two conditions differing in their emphasis on prevention. In the first, teacher‐implemented research‐based interventions were implemented during kindergarten and first grade. In the second, only the first‐grade intervention was implemented. Analyses were conducted separately for students not at risk, at low risk, and at high risk of reading problems. In the short term, the kindergarten intervention was highly effective for both low‐risk and high‐risk students, but it is only for the latter group that early gains translated into better reading skills at the end of first grade. Not‐at‐risk students did not benefit from the early introduction of reading instruction.  相似文献   

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Based on a purposive sample of 15 second‐year chemical engineering students, this study investigates students' conceptions of evaporation, condensation and vapour pressure. During individual interviews the students were questioned on three tasks that had been designed around these topics. Qualitative analysis of student responses showed a range of conceptions in each area, including some misconceptions. A key underlying misconception was the belief that evaporation and condensation require a temperature gradient in order to take place. Many students changed their initial (incorrect) answers when presented with further physical evidence as the interview progressed. The study points to the importance not only of practical work, but of associated conceptual discussions that allow students to reflect on and refine their conceptions.  相似文献   

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This study aimed to determine how 33 urban 5th grade students' science conceptions changed during a place‐based inquiry unit on watersheds. Research on watershed and place‐based education was used as a framework to guide the teaching of the unit as well as the research study. A teacher‐researcher designed the curriculum, taught the unit and conducted the research using qualitative data sources such as concept maps, science notebooks and interviews. Most students came to understand that their watershed was part of an urban environment where water drains from the surrounding land into a body of water. Thus, they began to understand how urban land use affects water quality. This study provides evidence for the use of place‐based learning in developing students' knowledge of the National Science Education Standards (NRC, 1996) and watersheds. Implications of this study include the use of place‐based learning in urban settings and the experiences needed for students to conceptualize watersheds. © 2009 Wiley Periodicals, Inc. J Res Sci Teach 47: 501–517, 2010  相似文献   

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This is a case study of a one‐year arts educational project I – from dreams to reality’ in which artists worked at school with teachers and learning at the school was planned through arts‐based, co‐operative teamwork during one extra school year of 10th grade students in Finnish basic education. The theme of the year was ‘I’, and so the project was designed to highlight everyone's own way of thinking and expressing art. The research task was to determine whether long‐term holistic arts pedagogy and artist co‐operation at school have any significant connection to students’ self‐efficacy and social skills. Data has been collected through students’ self‐evaluations before and after the school year. Altogether 40 students from 10th grade participated in this case study. Half of the pupils participated in an arts educational project called ‘I – from dreams to reality’ and half formed the control group. Artists worked with the test group weekly during a period of one school year (altogether nine months). Students’ self‐evaluations concerning their self‐efficacy and social behaviour were collected by e‐questionnaire. The measures used were Likert‐based evaluation scores of pupils’ self‐assessment of their self‐efficacy and social behaviour in everyday situations at school. According to the results, artist–teacher co‐operation and learning through the arts can be worthwhile experiences to develop students’ self‐efficacy and social skills.  相似文献   

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The aims of this study were to determine the underlying conceptual structure of the thermal concept evaluation (TCE) questionnaire, a pencil-and-paper instrument about everyday contexts of heat, temperature, and heat transfer, to investigate students’ conceptual understanding of thermal concepts in everyday contexts across several school years and to analyse the variables—school year, science subjects currently being studied, and science subjects previously studied in thermal energy—that influence students’ thermal conceptual understanding. The TCE, which was administered to 515 Korean students from years 10–12, was developed in Australia, using students’ alternative conceptions derived from the research literature. The conceptual structure comprised four groups—heat transfer and temperature changes, boiling, heat conductivity and equilibrium, and freezing and melting—using 19 of the 26 items in the original questionnaire. Depending on the year group, 25–55% of students experienced difficulties in applying scientific concepts in everyday contexts. Years of schooling, science subjects currently studied and physics topics previously studied correlated with development of students’ conceptual understanding, especially in topics relating to heat transfer, temperature scales, specific heat capacity, homeostasis, and thermodynamics. Although students did improve their conceptual understandings in later years of schooling, they still had difficulties in relating the scientific concepts to their experiences in everyday contexts. The study illustrates the utility of using a pencil-and-paper questionnaire to identify students’ understanding of thermal concepts in everyday situations and provides a baseline for Korean students’ achievement in terms of physics in everyday contexts, one of the objectives of the Korean national curriculum reforms.  相似文献   

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The purpose of this study was to investigate the alternative conceptions about burning phenomena among Atayal indigene elementary school students in Taiwan. The main difference from other relevant research is that this study assesses Atayal people’s worldview by means of a questionnaire developed specifically for this purpose. There were three stages in this study: First, three Atayal elders were interviewed to access their traditional knowledge about nature, naturally occurring events, and burning. Second, this knowledge was used to develop an open-ended questionnaire that was administered to 37 students at the third to sixth grade levels (ages 9 to 12); eight respondents were interviewed to document their worldviews. Third, a two-tier diagnostic questionnaire developed from these results was administered to 228 students with 44 respondents interviewed about the burning events assessed by the instrument. Results suggested that students held alternative conceptions about the five burning events: candles burning, factors of burning, fire extinguishment, material changes in burning, and traditional meanings of burning. In contrast with previous studies on burning, this study demonstrated the existence of other alternative conceptions. The origin of these alternative conceptions may be grounded in traditional culture, knowledge, environment, economy, medicine, and personal thinking.  相似文献   

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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   

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