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1.
This paper mainly describes the role of the multimedia software package ‘Interactions between Objects’ on students’ learning of mechanical interaction forces and Newton’s laws. We designed and developed this software within social constructivism on the basis of 226 students’ initial conceptions (categorized in six categories), in order to help students construct appropriate knowledge about the subject. Teaching with the software was conducted in 13 primary, lower secondary and upper secondary school classes. In the software’s evaluation research 226 students (aged 11–16) and 13 teachers of the classes participated. Data analysis showed students’ substantial learning gains with respect to their initial alternative conceptions of the six conceptual categories. Particularly, the students’ incorrect answers to the post-test questionnaire have perceptibly decreased (a mean of 65%). In contrast, their correct answers to the questions reached high percentages, from 60% to 90% depending on the question and the students’ age. Also the teachers’ opinions and comments enhanced software’s evaluation. The contribution of the software’s specific characteristics on students’ learning is discussed along with implications for designing constructivist science learning tools.  相似文献   

2.
This project explores conceptual continuity as a framework for understanding students’ native ways of understanding and describing. Conceptual continuity suggests that the relationship between the use of words in one genre and the scientific genre can exist at varying levels of association. This perspective can reveal the varied relationships between ideas explained in everyday or vernacular genres and their association to scientific explanations. We conducted a 2-year study involving 15 high school baseball players’ understanding of the physics involved in baseball. First, we conducted a quantitative assessment of their science understanding by administering a test prior to season one (2006) and season two (2007). Second, we examined the types of linguistic resources students used to explain their understanding. Third, we revisited our data by using conceptual continuity to identify similarities between students’ conceptual understanding in the informal contexts and their similarities to canonical scientific ideas. The results indicated students’ performance on the multiple-choice questions suggested no significant improvement. The qualitative analyses revealed that students were able to accurately explain different components of the idea by using a diversity of scientific and non-scientific genres. These results call attention to the need to reconstruct our vision of science learning to include a more language sensitive approach to teaching and learning.  相似文献   

3.
The objective of this study was to construct a teaching strategy for facilitating students’ conceptual understanding of the boiling concept. The study is based on 52 freshman students in the primary science education department. Students’ ideas were elicited by a test consisting of nine questions. Conceptual change strategy was designed based on students’ alternative conceptions. Conceptual change in students’ understanding of boiling was evaluated by administering a pre-, post- and delayed post-test. The test scores were analysed both by qualitative and quantitative methods. Statistical analysis using one-way ANOVA of student test scores pointed to statistically significant differences in the tests and total scores (p < 0.05). Quantitative analysis of students’ responses on each test revealed different schema about changing their knowledge system. Both qualitative and quantitative analyses suggest that the teaching activities facilitated students’ conceptual understanding. No statistically significant differences were found between post-test and delayed post-test scores, suggesting that the teaching strategy enabled students to retain their new conceptions in the long-term memory.  相似文献   

4.
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   

5.
This article reports on the development of a Predict–Observe–Explain, POE-based teaching strategy to facilitate conceptual change and its effectiveness on student understanding of condensation. The sample consisted of 52 first-year students in primary science education department. Students’ ideas were elicited using a test consisting of five probe questions and semi-structured interviews. A teaching activity composed of three Predict–Discuss–Explain–Observe–Discuss–Explain (PDEODE) tasks was employed, based on students’ preconceptions identified with the test. Conceptual change in students’ understanding of condensation was evaluated via a pre-, post-, and delayed post-test approach and students’ interviews. Test scores were analyzed using both qualitative and quantitative methods. The findings suggested that the strategy helps students to achieve better conceptual understanding for the concept of condensation and enables students to retain these new conceptions in their long-term memory.  相似文献   

6.
This study investigated the effectiveness of conceptual change texts in remediating high school students’ alternative conceptions concerning chemical equilibrium. A quasi-experimental design was used in this study. The subjects for this study consisted of a total 78 tenth-grade students, 38 of them in the experimental group and 40 of them in the control group. A questionnaire, the Alternative Conceptions about Chemical Equilibrium Test (ACCET), was developed and administered to students as a pretest and posttest. While the experimental group received a conceptual change text instruction, the control group received a traditional style instruction. The results of the study indicated that the students in the experimental group showed significantly greater levels of achievement than the students in the control group. Moreover, in both groups the percentages of students’ alternative conceptions decreased in the however the experimental group did better than the control group.  相似文献   

7.
In Uganda, curbing the spread of HIV/AIDS has largely depended on public and private media messages about the disease. Media campaigns based on Uganda’s cultural norms of communication are metaphorical, analogical and simile-like. The topic of HIV/AIDS has been introduced into the Senior Three (Grade 11) biology curriculum in Uganda. To what extent do students’ pre-conceptions of the disease, based on these media messages influence students’ development of conceptual understanding of the disease, its transmission and prevention? Of significant importance is the impact the conceptions students have developed from the indirect media messages on classroom instruction on HIV/AIDS. The study is based in a theoretical framework of conceptual change in science learning. An interpretive case study to determine the impact of Ugandan students’ conceptions or perceptions on classroom instruction about HIV/AIDS, involving 160 students aged 15–17, was conducted in four different Ugandan high schools: girls boarding, boys boarding, mixed boarding, and mixed day. Using questionnaires, focus group discussions, recorded biology lessons and informal interviews, students’ preconceptions of HIV/AIDS and how these impact lessons on HIV/AIDS were discerned. These preconceptions fall into four main categories: religious, political, conspiracy and traditional African worldviews. Results of data analysis suggest that students’ prior knowledge is persistent even after biology instructions. This has implications for current teaching approaches, which are mostly teacher-centred in Ugandan schools. A rethinking of the curriculum with the intent of offering science education programs that promote understanding of the science of HIV/AIDS as opposed to what is happening now—insensitivity to misconceptions about the disease—is needed.  相似文献   

8.
Attitudes toward learning (ATL) have been shown to influence students’ learning outcomes. However, there is a lack of knowledge about the ways in which the interaction between ATL, the learning situation, and the level of students’ prior knowledge influence affective reactions and conceptual change. In this study, a simulation of acid-base titrations was examined to assess the impact of instruction format, level of prior knowledge and students’ ATL on university-level students, with respect to flow experiences (Csikszentmihalyi, 1990) and perceived conceptual change. Results show that the use of guiding instructions was correlated with a perceived conceptual change and high levels of “Challenge,” “Enjoyment,” and “Concentration,” but low sense of control during the exercise. Students who used the open instructions scored highly on the “Control flow” component, but their perceived learning score was lower than that for the students who used the guiding instructions. In neither case did students’ ATL or their pre-test results contribute strongly to students’ flow experiences or their perceived learning in the two different learning situations.  相似文献   

9.
In the framework of the SAL (Students’ approaches to learning) poosition, the learning experience (approaches to learning and study orchestrations) of 572 high school students was explored, examining its interrelationships with some personal and familial variables. Three major results emerged. First, links were found between family’s intellectual climate and students’ approaches to learning, in particular with Deep appraoch: The better the family’s intellectual climate the higher student’ scores on Deep approach. Second, along with general intelligence, these approaches predicted students’ academic achievement, higher grades being obtained by these students who scored lower in Surface learning approach and higher in Deep learning approach. Three, students from the four study orchestrations reported in previous research (two displaying conceptual consonance: Deep and Surface approaches, and the other two conceptual dissonance: high-high and low-low, in both Deep and Surface approaches) showed different profiles in some variables (e.g., metacognitive learning strategies, family’s intellectual climate, academic achievement), worse scores being obtained by those who orchestrated their study either in surface or in conceptually dissonant ways. These relationships shed more light on the nature of high school students ‘learning experience, and help to provide an integrated view of students’ webs of experience.  相似文献   

10.
This paper reports on an attempt to investigate Turkish primary school students’ interest in science by using their self-generated questions. We investigated students’ interest in science by analyzing 1704 self-generated science-related questions. Among them, 826 questions were submitted to a popular science magazine called Science and Children. Such a self-selected sample may represent a group of students who have a higher level of motivation to seek sources of information outside their formal education and have more access to resources than the students of low social classes. To overcome this problem, 739 students were asked to write a question that they wanted to learn from a scientist and as a result 878 questions were gathered. Those students were selected from 13 different schools at 9 cities in Turkey. These schools were selected to represent a mixture of socioeconomic areas and also to cover different students’ profile. Students’ questions were classified into two main categories: the field of interest and the cognitive level of the question. The results point to the popularity of biology, astrophysics, nature of scientific inquiry, technology and physics over other science areas, as well as indicating a difference in interest according to gender, grade level and the setting in which the questions were asked. However, our study suggests that only considering questions submitted to informal learning environments, such as popular science magazines or Ask-A-Scientist Internet sites has limitations and deficiencies. Other methodologies of data collection also need to be considered in designing teaching and school science curriculum to meet students’ needs and interest. The findings from our study tend to challenge existing thinking from other studies. Our results show that self-generated questions asked in an informal and a formal setting have different patterns. Some aspects of students’ self-generated questions and their implications for policy, science curriculum reform and teaching are discussed in this paper.  相似文献   

11.
This study examined the relationships among Taiwanese high school students’ scientific epistemic beliefs, conceptions of learning science, and self-efficacy of learning science. The questionnaire responses gathered from 377 high school students in Taiwan were utilized to elicit such relationships. The analysis of the structural equation model revealed that students’ absolutist scientific epistemic beliefs led to lower-level conceptions of learning science (i.e. learning science as memorizing, preparing for tests, calculating, and practicing) while sophisticated scientific epistemic beliefs might trigger higher-level conceptions of learning science (i.e. learning science as increase of knowledge, applying, and attaining understanding). The students’ lower-level conceptions of learning science were also found to negatively associate with their self-efficacy of learning science, while the higher-level conceptions of learning science fostered students’ self-efficacy. However, this study found that students who viewed scientific knowledge as uncertain (advanced epistemic belief) tended to possess lower self-efficacy toward learning science.  相似文献   

12.
This paper focuses on the role of dominant school discourses in structuring how students position themselves and others relative to a community centered on science. The study was conducted in a diverse, eighth grade classroom in an urban magnet school. I argue that dominant discourses portray a limited view of available subject positions, in that the purpose of learning science is associated with a dichotomous view of people as being either college-bound or not. I explore how these limited subject positions can pose contradictions with some students’ interests, constrain students’ visions of possibilities, exacerbate disadvantages based on race and class, and interfere with students acquiring identities as science learners. However, there are also possibilities for resistance, agency and self-definition through students’ talk. Stacy Olitskycurrently works as a researcher for the Math and Science Partnership of Greater Philadelphia and is a lecturer at the University of Pennsylvania. She has a doctoral degree in Education and Sociology from the University of Pennsylvania. She has spent the past several years working on a longitudinal, ethnographic study of science education in an urban magnet school. Her research interests include the relationship of identity and science learning, interaction rituals in classrooms, in-field and out-of-field science teaching, the influence of social capital and cultural capital on science learning, activity theory and classroom change, and students’ experiences with school choice.  相似文献   

13.
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14.
This article reports research from a 3 year digital learning project to unite conceptual change and scientific reasoning in the learning unit of combustion. One group of students had completed the course combining conceptual change and scientific reasoning. The other group of students received conventional instruction. In addition to the quantitative data, six students from each group were interviewed to evaluate their conceptual change, correct concepts and scientific reasoning. Results indicate that the experimental group’s students significantly outperformed the conventional group on the Combustion Achievement Test (CAT), Scientific Reasoning Test (SRT) and Combustion Dependent Reasoning Test (CDRT). Moreover, the experimental group’s students use higher levels of scientific reasoning more frequently and changed their alternative concepts more successfully than did the conventional group. Furthermore, once the experimental group’s students’ successfully changed their conceptions, their concepts tended to be more stable than the conventional group’s students, even after the 6th week of learning. These results demonstrate that combining conceptual change and scientific reasoning indeed improves students’ conceptual change and scientific reasoning ability more effectively than conventional instruction.  相似文献   

15.
The purpose of this study was to investigate the effect of conceptual change texts accompanied with concept mapping instruction, compared to traditional instruction (TI), on 8th grade students understanding of solution concepts and their attitudes toward science as a school subject. Solution Concept Test was developed as a result of examination of related literature and interviews with teachers regarding their observations of students difficulties. The test was administered to a total of 64 eighth grade students from two classes of a general science course, taught by the same teacher. The experimental group received the conceptual change texts accompanied with concept mapping in a lecture by the teacher. This instruction explicitly dealt with students misconceptions. It was designed to suggest conditions in which misconceptions could be replaced by scientific conceptions and new conceptions could be integrated with existing conceptions. The control group received TI in which the teacher provided instruction through lecture and discussion methods. The results showed that conceptual change text accompanied with concept mapping instruction caused a significantly better acquisition of scientific conceptions related to solution concept and produced significantly higher positive attitudes toward science as a school subject than the TI. In addition, logical thinking ability and prior learning were strong predictors for the concept learning related to solution.  相似文献   

16.
This position paper proposes the enhancement of teacher and student learning in science classrooms by tapping the enormous potential of information communication and technologies (ICTs) as cognitive tools for engaging students in scientific inquiry. This paper serves to challenge teacher-held assumptions about students learning science ‘from technology’ with a framework and examples of students learning science ‘with technology’. Whereas a high percentage of students are finding their way in using ICTs outside of school, for the most part they currently are not doing so inside of school in ways that they find meaningful and relevant to their lives. Instead, the pedagogical approaches that are most often experienced are out-of-step with how students use ICTs outside of schools and are not supportive of learning framed by constructivism. Here we describe a theoretical and pedagogical foundation for better connecting the two worlds of students’ lives: life in school and life outside of school. This position paper is in response to the changing landscape of students’ lives. The position is transformative in nature because it proposes the use of cyber-enabled resources for cultivating and leveraging students new literacy skills by learning ‘with technology’ to enhance science learning.  相似文献   

17.
The conceptual knowledge of science processes possessed by University of Botswana science students and senior secondary school science teachers was sought through a three-part questionnaire. One part requested demographic data of subjects, the second part asked them to select their level of familiarity with the processes, and the third part probed their conceptual definitions of the science processes. The definitions were scored as incorrect, partially correct and correct on an ordinal scale. Statistical analysis was done using Spearman rho correlation and one sample t test. The findings revealed that the science teachers did not have sufficient conceptual knowledge of science processes to help their students to understand in a meaningful way; both students’ and teachers’ views of their familiarity of science processes did not corroborate their demonstrated ability to provide acceptable conceptual definitions of the processes; there was no association between students’ and teachers’ conceptions of the science processes; and if conceptual knowledge of science processes was demanded, the entering students, who were the immediate graduates of the senior secondary schools, might not have enough to pursue tertiary level science courses. It is suggested that both conceptual and operational knowledge of science processes be required at secondary and tertiary levels of science education.  相似文献   

18.
In this study, the author implemented a problem-based learning (PBL) experience that allowed students in an advanced science methodology course to explore differentiated instruction. Through working systematically in small, collaborative groups, students explored the nature of differentiated instruction. The objective of the study was to examine pre-service teachers’ developing conceptions of differentiated instruction (DI) as a way to teach for diversity. The author adopted action research as a strategy to explore students’ perceptions of DI in the context of science teaching and learning. Several data collection methods and sources were adopted in the study, including student-generated products, student interviews, classroom observation, and journal writing. Outcomes report on students’ perceptions of both the potential and challenges associated with adopting a DI approach to science teaching and learning.  相似文献   

19.
The purpose of this study is to understand in what ways a technology-enhanced learning (TEL) environment supports learning about the causes of the seasons. The environment was designed to engage students in five cognitive phases: Contextualisation, Sense making, Exploration, Modeling, and Application. Seventy-five high school students participated in this study and multiple sources of data were collected to investigate students’ conceptual understandings and the interactions between the design of the environment and students’ alternative conceptions. The findings show that the number of alternative conceptions held by students were reduced except for the incorrect concepts of “the length of sunshine” and “the distance between the sun and the earth.” The percentage of partial explanations held by students was also reduced from 60.5 to 55.3% and the percentage of students holding complete scientific explanations after using Lesson Seasons rose from 2.6 to 15.8%. While some students succeeded in modeling their science concepts closely to the expert’s concepts, some failed to do so after the invention. The unsuccessful students could not remediate their alternative conceptions without explicit guidance and scaffolding. Future research can then be focused on understanding how to provide proper scaffoldings for removing some alternative concepts which are highly resistant to change.
Fu-Kwun HwangEmail:
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20.
This study investigated the effect of metaconceptual teaching interventions on students’ understanding of force and motion concepts. A multimethod research design including quasi-experimental design and case study designs was employed to compare the effect of the metaconceptual activities and traditional instruction and investigate students’ reactions to metaconceptual teaching interventions. The participants (45 high school students in the USA) were enrolled in one of the two physics classes instructed by the same science teacher. In the experimental group, students’ engagement in metaconceptual knowledge and processes was facilitated through various instructional activities, including poster drawing, journal writing, group debate, concept mapping, and class and group discussions. These activities were intended to facilitate students’ engagement in (a) becoming aware of their existing and past conceptions, associated beliefs, everyday experiences, and contextual differences, (b) monitoring their understanding of the new conception, the changes in ideas, and the consistency between existing and new conceptions, and (c) evaluating the relative ability of competing conceptions to explain a physical phenomenon. In the comparison group, the same content knowledge was explained by the teacher along with the use of laboratory experiments, demonstrations, and quantitative problem solving. Students’ reactions to the designed instructional activities indicated that metaconceptual teaching interventions were successful in facilitating students’ engagement in several types of metaconceptual functioning. The results showed that students in the experimental group had significantly better conceptual understanding than their counterparts in the comparison group and this positive impact remained after a period of 9 weeks.  相似文献   

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