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1.
Michel Ferrari Michelene T. H. Chi 《International Journal of Science Education》2013,35(10):1231-1256
Unlike some pivotal ideas in the history of science, the basic notion of natural selection is remarkably simple and so one might expect most students to easily grasp the basic principles of the Darwinian theory; yet many students nevertheless have difficulty understanding Darwinian evolution. We suggest that misconceptions about natural selection arise from mistaken categorization. Our thesis for explaining students’ failure to understand this concept or evolution in general is not that they necessarily fail to understand individual Darwinian principles; rather, they often fail to understand the ontological features of equilibration processes, of which evolution is one instance. They thus attribute the evolutionary process in general, and natural selection in particular, with event‐like properties. For example, naive students appear to focus on the idea of survival of the fittest, but embed this idea within an event ontology that involves actors struggling to overcome obstacles and achieve goals. Results showed that most naive subjects’ evolutionary explanations reflected an event ontology. Furthermore, event ontology attributes were positively correlated with non‐Darwinian explanations; by contrast, equilibration attributes, when present, were positively correlated with key Darwinian principles. These findings suggest that students would greatly benefit from science instruction that emphasized the underlying ontology of modern evolutionary theory. 相似文献
2.
This study examines the relationship between the learning motivation and conceptual change of 127 eighth graders, after they have learned the acid, base, and salt concept in a digital learning context, designed according to the dual‐situated learning model (DSLM). Two instruments—the students’ motivation towards science learning (SMTSL) questionnaire and the acid‐base‐salt concept diagnostic test (CDT)—were used in the study. The questionnaire and the test were given to students in pre‐test, post‐test, and delayed post‐test. Based on their motivation questionnaire scores, 18 students were selected from various scoring ranges for semi‐structural interviews. Results showed that, after experiencing DSLM digital learning, students’ post‐CDT and delay‐CDT scores were significantly higher than pre‐CDT scores (p < 0.001, p < 0.01). Furthermore, Pearson correlation analysis indicated that students’ conceptual change (ΔCDT) was significantly correlated with motivational factors such as self‐efficacy (SE), active learning strategy (ALS), science learning value (SLV), achievement goal (AG), and learning environment stimulation (LES) (p < 0.05). Interviews also supported students’ motivational correlation to ΔCDT, particularly for SE, ALS, and AG. 相似文献
3.
This article explores the conceptual change of students in Grades 10 and 12 in three Australian senior high schools when the teachers included computer multimedia to a greater or lesser extent in their teaching of a genetics course. The study, underpinned by a multidimensional conceptual‐change framework, used an interpretive approach and a case‐based design with multiple data collection methods. Over 4–8 weeks, the students learned genetics in classroom lessons that included BioLogica activities, which feature multiple representations. Results of the online tests and interview tasks revealed that most students improved their understanding of genetics as evidenced in the development of genetics reasoning. However, using Thorley's (1990) status analysis categories, a cross‐case analysis of the gene conceptions of 9 of the 26 students interviewed indicated that only 4 students' postinstructional conceptions were intelligible–plausible–fruitful. Students' conceptual change was consistent with classroom teaching and learning. Findings suggested that multiple representations supported conceptual understanding of genetics but not in all students. It was also shown that status can be a viable hallmark enabling researchers to identify students' conceptual change that would otherwise be less accessible. Thorley's method for analyzing conceptual status is discussed. © 2006 Wiley Periodicals, Inc. J Res Sci Teach 44: 205–235, 2007 相似文献
4.
Ali Eryilmaz 《科学教学研究杂志》2002,39(10):1001-1015
The purpose of this study was to investigate the effects of conceptual assignments and conceptual change discussions on students' achievement and misconceptions about force and motion. The study was conducted with 6 physics teachers and their 18 classes, consisting of 396 high school physics students. The teachers administered the Force Misconception and Force Achievement Tests to their physics classes as a pretest. The results obtained were used to match the 18 classes statistically. Students assigned to the conceptual assignment protocol completed five conceptual assignments about force and motion. Students assigned to the discussion method participated in conceptual change discussions. At the end of the 8‐week treatment period, the same tests were administered to all students as a posttest. The data were analyzed by using multivariate analysis of covariance, followed by protected univariate F test and step‐down analysis. The statistical results showed that the conceptual change discussion was an effective means of reducing the number of misconceptions students held about force and motion. The conceptual change discussion was also found significantly effective in improving students' achievement in force and motion. © 2002 Wiley Periodicals, Inc. J Res Sci Teach 39: 1001–1015, 2002 相似文献
5.
Sukjin Kang Lawrence C. Scharmann Taehee Noh Hanjoong Koh 《International Journal of Science Education》2013,35(9):1037-1058
In this study, the relationships among students’ cognitive/motivational variables, cognitive conflict, and conceptual change were investigated. Subjects were 159 seventh graders in Korea. Tests regarding logical thinking ability, field dependence/independence (FDI), meaningful learning approach, failure tolerance, mastery goal orientation, and self‐efficacy were administered to examine students’ cognitive/motivational characteristics. A preconception test and a test of responses to discrepant event were also conducted to examine the degree of students’ cognitive conflict induced by a discrepant event. Computer‐assisted instruction, designed to change an undifferentiated weight‐density concept into a scientific density concept, was then provided to students as a conceptual change intervention. A conception test was administered as a post‐test. The results indicated that FDI was the only statistically significant variable correlated with the degree of cognitive conflict. A stepwise multiple regression analysis revealed that logical thinking ability, FDI, and failure tolerance were statistically significant predictors of the conception test scores. Educational implications are discussed. 相似文献
6.
Joseph Nussbaum 《International Journal of Science Education》2013,35(5):530-540
Researchers of students’ concepts and conceptual change frequently draw analogies to the history of science. The analogy is generally presented when comparing students’ scientific concepts to similar ones in the history of science. We have tried to show the importance of this analogy on a higher level ‐‐ that of understanding the process of conceptual change in general among students. This article outlines a number of lines in the philosophy of science and analyses differences between the perspectives of a number of broadly constructivist positions which have developed during this century. The analysis is used to clarify the theoretical basis on which research into student conceptual change is conducted and interpreted. 相似文献
7.
SodaConstructing knowledge through exploratoids 总被引：1，自引：0，他引：1
In this article, we describe a preliminary study that integrates research on engineering design activities for K‐12 students with work on microworlds as learning tools. Here, we extend these bodies of research by exploring whether—and how—authentic recreations of engineering practices can help students develop conceptual understanding of physics. We focus on the design–build–test (DBT) cycle used by professional engineers in simulation‐based rapid modeling. In this experiment, middle‐school students worked for 10 hr during a single weekend to solve engineering design challenges using SodaConstructor, a Java‐based microworld, as a simulation environment. As a result of the experiment, students learned about center of mass. Our data further suggest that in the process of simulation‐based modeling, rapid iterations of the DBT cycle progressively linked students' interest in the design activities and understanding of the concept of center of mass. We suggest that these rapid iterations of the DBT cycle functioned as exploratoids: short fragments of exploratory action in a microworld that cumulatively develop interest in and understanding of important scientific concepts. © 2006 Wiley Periodicals, Inc. J Res Sci Teach 相似文献
8.
The purpose of this study was to investigate students' mental models of chemical equilibrium using dynamic science assessments. Research in chemical education has shown that students at various levels have misconceptions about chemical equilibrium. According to Chi's theory of conceptual change, the concept of chemical equilibrium has constraint‐based features (e.g., random, simultaneous, uniform activities) that might prevent students from deeply understanding the nature of the concept of chemical equilibrium. In this study, we examined how students learned and constructed their mental models of chemical equilibrium in a cognitive apprenticeship context. Thirty 10th‐grade students participated in the study: 10 in a control group and 20 in a treatment group. Both groups were presented with a series of hands‐on chemical experiments. The students in the treatment group were instructed based on the main features of cognitive apprenticeship (CA), such as coaching, modeling, scaffolding, articulation, reflection, and exploration. However, the students in the control group (non‐CA group) learned from the tutor without explicit CA support. The results revealed that the CA group significantly outperformed the non‐CA group. The students in the CA group were capable of constructing the mental models of chemical equilibrium—including dynamic, random activities of molecules and interactions between molecules in the microworld—whereas the students in the non‐CA group failed to construct similar correct mental models of chemical equilibrium. The study focuses on the process of constructing mental models, on dynamic changes, and on the actions of students (such as self‐monitoring/self‐correction) who are learning the concept of chemical equilibrium. Also, we discuss the implications for science education. © 2002 Wiley Periodicals, Inc. J Res Sci Teach 39: 688–712, 2002 相似文献
9.
Uri Shafrir Masha Etkind 《British journal of educational technology : journal of the Council for Educational Technology》2006,37(3):425-444
In this paper, we describe concept parsing algorithms, a novel semantic analysis methodology at the core of a new pedagogy that focuses learners’ attention on deep comprehension of the conceptual content of learned material. Two new e‐learning tools are described in some detail: interactive concept discovery learning and meaning equivalence reusable learning objects. These semantic technologies were developed at the Ontario Institute for Studies in Education and Adaptive Technology Resource Centre of Faculty of Information Studies (ATRC/FIS) at the University of Toronto; they were tested since 2001 in several academic institutions in Canada and at the Russian Academy of Sciences (patents pending: US patent 6,953,344 B2, USPO ?20050149510; Copyright 2005, PARCEP Inc.). We describe the rationale for developing these instructional tools, their main characteristics and results of several evaluative implementations that show their potential to enhance learning outcomes and to provide authentic, credible, evidence‐based formative assessments of learning processes. 相似文献
10.
Jo Boaler 《British Educational Research Journal》2008,34(2):167-194
Equity is a concept that is often measured in terms of test scores, with educators looking for equal test scores among students of different cultural groups, social classes or sexes. In this article the term ‘relational equity’ is proposed to describe equitable relations in classrooms; relations that include students treating each other with respect and responsibility. This concept will be illustrated through the results of a four‐year study of different mathematics teaching approaches, conducted in three Californian high schools. In one of the schools—a diverse, urban high school—students achieved at higher levels, learned good behaviour, and learned to respect students from different cultural groups, social classes, ability levels and sexes. In addition, differences in attainment between different cultural groups were eliminated in some cases and reduced in all others. Importantly, the goals of high achievement and equity were achieved in tandem through a mixed‐ability mathematics approach that is not used or well known in the UK. 相似文献
11.
Sue Ashley Harmen Schaap Elly de Bruijn 《Assessment & Evaluation in Higher Education》2017,42(5):690-704
This study aims to identify an adequate approach for revealing conceptual understanding in higher professional education. Revealing students’ conceptual understanding is an important step towards developing effective curricula, assessment and aligned teaching strategies to enhance conceptual understanding in higher education. Essays and concept maps were used to determine how students’ conceptual understanding of international business can be revealed adequately. To this end, 132 international business students in higher professional education were randomly assigned to four conditions to write essays and to construct concept maps about an international business research topic. The conditions were: essay alone, essay after concept map, concept map alone, and concept map after essay. An assessment rubric was used to assess the breadth and depth of students’ conceptual understanding. Results show essays are the most adequate approach for revealing conceptual understanding of international business. In particular, concept maps revealed fewer facts and less reasoning than essays. Essays written after concept maps were less effective than essays, possibly since students perceived these essays as redundant. Further research is suggested on how educators can foster conceptual understanding. 相似文献
12.
David B. Hay Caroline Kehoe Marc E. Miquel Stylianos Hatzipanagos Ian M. Kinchin Steve F. Keevil Simon Lygo‐Baker 《British journal of educational technology : journal of the Council for Educational Technology》2008,39(6):1037-1056
This paper shows how concept mapping can be used to measure the quality of e‐learning. Six volunteers (all of them 3rd‐year medical students) took part in a programme of e‐learning designed to teach the principles of magnetic resonance imaging (MRI). Their understanding of MRI was measured before and after the course by the use of concept mapping. The quality of change in individuals' maps was assessed using criteria developed to distinguish between meaningful and rote‐learning outcomes. Student maps were also scored for evidence of conceptual richness and understanding. Finally, each map was compared directly with the content of the electronic teaching material. The results show that many of the student misconceptions were put right in the course of their learning but that many of the key concepts introduced in the teaching were ignored (or sometimes learnt by rote) by the students. This was because the teaching material locked these new ideas in structures and terminology that precluded meaning‐making among non‐experts. Our data suggest that students' prior knowledge is a key determinant of meaningful learning. We suggest that this must be acknowledged if the design and use of electronic teaching material is also to be meaningful. Ultimately, measures of student learning are the only authentic indicators of the quality of teaching through technology. 相似文献
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14.
Mei-Hung Chiu Hongming Leonard Liaw Yuh-Ru Yu Chin-Cheng Chou 《British journal of educational technology : journal of the Council for Educational Technology》2019,50(1):469-480
Utilizing facial recognition technology, the current study has attempted to predict the likelihood of student conceptual change with decision tree models based on the facial micro-expression states (FMES) students exhibited when they experience conceptual conflict. While conceptual change through conceptual conflicts in science education is a well-studied field, there is little research done on conceptual change through conceptual conflict in terms of students' facial expressions. As facial expressions are one of the most direct and immediate responses one can get during instruction and that facial expressions are often representations student's emotions, a link between students' FMES and learning was explored. Facial data was collected from 90 tenth graders. Only data from the 72 students who made incorrect predictions were analyzed in this study. The concept taught was the relationship between boiling point and air pressure. Through facial recognition software analysis and decision tree models, the current study found Surprised, Sad and Disgusted to be key FMES that could be used to predict student conceptual change in a conceptual conflict-based scenario. 相似文献
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16.
Learning can be seen as a task-oriented process which often requires the reorganization of existing knowledge, usually referred to as conceptual change. This paper describes a theoretical framework for the analysis of conceptual change that considers conceptual knowledge as a generative cognitive tool for the creation of more specific mental representations — propositional symbolic structures and analog mental models. According to this view, conceptual change is based on a task-oriented interaction between these different kinds of mental representations. The assumption is made that it is possible to foster conceptual change by presenting to students well-defined tasks that stimulate the construction of elaborated mental models as well as an intensive interaction between these models and the corresponding propositional representations. In order to test this assumption an empirical study was conducted, in which subjects had to express their prior knowledge about a complex subject matter from the field of geography (time differences on the earth), which contained various conceptual deficits. The subjects were then randomly assigned to different groups who received the same learning material but had to solve different learning tasks requiring differently structured mental models. Afterwards, the subjects were asked to express their knowledge about the subject matter again and were tested for understanding with a comprehension test. The results support the view that a task-oriented interaction between propositional structures and mental models can help learners to evaluate the consistency of their conceptual knowledge. Accordingly, conceptual deficits result in the formation of mental models with an inadequate structure. Such deficits can be detected if the respective model is used in a sufficiently variable way, whereas they can remain unnoticed if it is used in a limited manner. 相似文献
17.
Conceptual change in undergraduate capstone courses provides unique opportunities to examine how students draw from multiple courses and experiences to resolve conceptual confusion. We examined how senior-level natural resource management students revised their conceptions of ‘ecosystem’ throughout their capstone course. The concept of ecosystem is complicated by a lack of shared meaning across disciplines. Our grounded theory study analyzed student coursework and pre/post interviews. It was informed by socio-cultural and conceptual change theories and used an ecological literacy metric to examine how students’ conceptualizations of the relationships between natural, ecosystem, human, and human artifact influenced their conceptions of ecosystems. Students who did not describe ecosystems as natural struggled less with integrating human society into ecosystems than their peers that did. We conclude that it is important to explicitly create shared meaning of key conceptions at the start of a capstone course to facilitate shared meaning-making and desired conceptual change during the course. 相似文献
18.
The purpose of this study was to investigate how concept cartoons, together with other diagnostic and scaffolding tools, could be used in formative assessment, to stimulate talk and argumentation among students in small groups, as part of peer‐assessment and self‐assessment; and to provide diagnostic feedback about students’ misconceptions to the teacher for teaching towards conceptual change. Two classes of Primary 5 and 6 students worked in small groups to discuss the opposing viewpoints posed by the cartoon characters, using scaffolding tools to guide their discussions and to evaluate, challenge, and document each others’ ideas. Students also used drawings to depict their ideas. The conversation from one group was audio‐taped. These tools provided a record of students’ thinking in a form that was accessible to the teacher for monitoring and feedback purposes. Findings showed dialogic talk and interactive argumentation among students where they made their reasoning visible. Students’ assertions and questions had formative potential as they encouraged exploratory and reflective discourse by drawing upon each others’ ideas. The teacher’s discursive practices, as well as her role in designing scaffolding structures for supporting ‘assessment conversations’ when using concept cartoons and in devising strategies that take into account students’ conceptual and epistemic thinking, are emphasised. 相似文献
19.
An Investigation of Effectiveness of Conceptual Change Text-oriented Instruction on Students' Understanding of Solution Concepts 总被引：2，自引：0，他引：2
Tacettin PinarbaŞi; NurtaÇ Canpolat Samih BayrakÇeken Ömer Geban 《Research in Science Education》2006,36(4):313-335
This study investigated the effect of conceptual change text-oriented instruction over traditional instruction on students' understanding of solution concepts (e.g., dissolving, solubility, factors affecting solubility, concentrations of solutions, types of solutions, physical properties of solutions) and their attitudes towards chemistry. The sample of this study consisted of 87 undergraduate students from two classes enrolled in an introductory chemistry course. One of the classes was assigned randomly to the control group, and the other class were assigned randomly to the experimental group. During teaching the topic of solution concepts in the chemistry curriculum, a conceptual change text-oriented instruction was applied in the experimental group whereas traditional instruction was followed in the control group. The results showed that the students in the experimental group performed better with respect to solution concepts. In addition, it has been found that there was no significant difference between the attitudes of students in the experimental and control groups towards chemistry. 相似文献
20.
Salem A. Alkhawaldeh 《Research in Science & Technological Education》2013,31(3):371-385
The purpose of this study was to investigate the effectiveness of the conceptual change text oriented instruction over traditionally designed instruction on ninth grade students’ understanding of the human circulatory system concepts, and their retention of this understanding. The subjects of this study consist of 73 ninth grade female students from two classes of a basic school in Jordan. One of the classes was randomly assigned as an experimental group in which conceptual change text oriented instruction was implemented, and the other class was randomly assigned as a control group in which students were instructed by traditionally designed biology instruction. Results showed that students exposed to conceptual change oriented instruction had better understanding of the human circulatory system concepts than those exposed to traditional instruction. The results also showed that the conceptual change text oriented instruction was significantly better than the traditional instruction in retention of this understanding. 相似文献