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1.
Previous research seems to support the assumption that students need instructional guidance to activate and correct their preconceptions. Such an instructional strategy is the CONTACT strategy, characterised by continuous, computer-assisted activation of the conceptions of individual learners. Our previous study showed that the CONTACT strategy was effective in promoting conceptual change in text processing (domain: physical geography) because students (fifth- and sixth-graders, primary education) constructed more correct conceptions. However, students mainly seemed to focus on the central concepts from the training texts, disregarding other information. Therefore, the strategy was adapted to solve this problem of selective attention and to increase its effectiveness. Subjects (74 fifth- and sixth-graders) were assigned to three instructional conditions (original CONTACT condition, revised CONTACT-2 condition and control condition NO ACTIVATION). A mixed between-within-subjects design was used with 2 between-subjects factors (instructional condition and students' familiarity with the central concepts from the 7 texts used). Dependent variables concerned quality of conceptions and learning performance. Students from the CONTACT-2 condition constructed better conceptions and achieved higher learning performance scores than students from the other two conditions. Moreover, the effectiveness of the CONTACT-2 strategy appeared not to depend on the degree of conceptual resemblance between the performance test questions and the central concepts from the texts and on the moment of testing. Additional research should shed some light on the instructional conditions required to teach students how they themselves can initiate and perform learning activities aimed at conceptual change. 相似文献
2.
Dr Peter Searle 《Research in Science Education》1993,23(1):266-275
This paper reports on the application of a constructivist-based teaching strategy with a small group of first-year physics
students. Data collection and analysis procedures are discussed, and the responses of three students to three situations involving
force concepts are presented. A number of issues relevant to conceptual change teaching strategies are identified. In addition
to an emphasis on alternative conceptions, issues identified that require consideration when developing teaching strategies
for conceptual change include an emphasis on understanding physics terminology, the development of a supportive learning environment
and the use of a wide range of problem contexts.
Specializations: physics education, alternative conceptions, conceptual change. 相似文献
3.
One of the factors affecting students' learning in science is their existing knowledge prior to instruction. The students' prior knowledge provides an indication of the alternative conceptions as well as the scientific conceptions possessed by the students. This study is concerned primarily with students' alternative conceptions and with instructional strategies to effect the learning of scientific conceptions; i.e., to effect conceptual change from alternative to scientific conceptions. The conceptual change model used here suggests conditions under which alternative conceptions can be replaced by or differentiated into scientific conceptions and new conceptions can be integrated with existing conceptions. The instructional strategy and materials were developed for a particular student population, namely, black high school students in South Africa, using their previously identified prior knowledge (conceptions and alternative conceptions) and incorporate the principles for conceptual change. The conceptions involved were mass, volume, and density. An experimental group of students was taught these concepts using the special instructional strategy and materials. A control group was taught the same concepts using a traditional strategy and materials. Pre- and posttests were used to assess the conceptual change that occurred in the experimental and control groups. The results showed a significantly larger improvement in the acquisition of scientific conceptions as a result of the instructional strategy and materials which explicitly dealt with student alternative conceptions. 相似文献
4.
P. K. Tao 《Research in Science Education》1994,24(1):322-330
This paper reports on an investigation into Hong Kong students' comprehension of English non-technical words used in science.
The investigation was conducted in a context in which English, a foreign language to students, is the medium of instruction,
in that textbooks and examinations are all in English but the classroom language used is mainly Chinese, with frequent Chinese-English
code-switching. A total of 4644 Secondary 4, 5 and 6 students participated in the study. Many students did not correctly comprehend
a large proportion of the words, confused them with words that were graphologically or phonetically similar, and even took
them for their antonyms. Such poor performance raises doubts as to whether the majority of Hong Kong students have attained
a ‘threshold level’ of competence in English to benefit from learning science in English.
Specializations: physics education, students' alternative conceptions in science, conceptual change, computer-assisted learning in physics. 相似文献
5.
6.
The role of conceptual conflict in conceptual change and the design of science instruction 总被引：9，自引：0，他引：9
Conceptual conflict has long been recognized as a factor that could facilitate student learning. Due, however, to the lack of a convincing explanation of why it occurs, and how it can be resolved, it has seldom been used in instructional design. Its potential use in instruction is particularly relevant in the light of the recent, well-documented finding that students' existing conceptions frequently constitute a barrier to effective learning. This article examines conceptual conflict in the light of an epistemological model of learning as conceptual change. This analysis shows that the conceptual change model provides an explanation of conceptual conflict which is sufficiently detailed to allow it to be used in the design of instruction. The results of two studies, the first of which addressed the concepts of mass, volume, and density, and the second, the concept of speed, show that instruction, designed in this way, is effective in changing students' existing conceptions. 相似文献
7.
Sharma Manjula D. Millar Rosemary M. Smith Andrew Sefton Ian M. 《Research in Science Education》2004,34(3):267-289
We report on an investigation of students' ideas about gravity after a semester of instruction in physics at university. There are two aspects to the study which was concerned with students' answers to a carefully designed qualitative examination question on gravity. The first aspect is a classification of the answers and a comparative study of the ways the problem was tackled by two large groups of students who had different backgrounds in physics and were exposed to different teaching styles. The second aspect is to investigate how students link concepts to solve the problem. We used a phenomenographic analysis of student responses to extract patterns of reasoning and alternative conceptions behind the solutions. We found no differences between the classes of answers given by students in the two courses. Our analysis also identifies a hierarchy in the complexity of the hypothetical reasoning pathways, which we interpret as reflecting the ways in which students may link concepts and resolve conflicts as they solve the problem. The hypothetical reasoning pathways may help educators to develop instructional material or lecture room dialogue in order to tease out key issues. An unexpected finding is that there is a discrepancy between our conclusion that the two groups of answers are similar and the distribution of marks awarded by the examiner – which implies that the quality of the answers is different for the two groups. 相似文献
8.
Nancy J. Fellows 《科学教学研究杂志》1994,31(9):985-1001
This study, conducted in an inner-city middle school, followed the conceptual changes shown in 25 students' writing over a 12-week science unit. Conceptual changes for 6 target students are reported. Student understanding was assessed regarding the nature of matter and physical change by paper-and-pencil pretest and posttest. The 6 target students were interviewed about the goal concepts before and after instruction. Students' writing during lesson activities provided qualitative data about their understandings of the goal concepts across the science unit. The researcher constructed concept maps from students' written statements and compared the maps across time to assess changes in the schema of core concepts, complexity, and organization as a result of instruction. Target students' changes were studied in detail to determine patterns of conceptual change. After patterns were located in target students' maps, the remaining 19 students' maps were analyzed for similar patterns. The ideas that students identified in their writing showed changes in central concepts, complexity, and organization as the lessons progressed. When instructional events were analyzed in relation to students' demonstrated ideas, understanding of the goal conceptions appeared in students' writing more often when students had opportunities to explain their new ideas orally and in writing. 相似文献
9.
建构主义理论对高职院校创新教育的启示 总被引：1，自引：0，他引：1
当代社会的发展迫切需要高职院校加强创新教育,以培养更多创新型的应用性人才。建构主义理论蕴涵丰富的创新教育思想。为有效地实施创新教育,高职院校可以借鉴建构主义的积极理念。高职院校需要积极转变传统的知识观、师生观和教学观,了解和优化学生的认知结构,激发学生主动建构学习的意向;教师要指导学生积极有效地建构知识,从高职院校的教育环境、教师素质和学习评价等方面来优化创新教育的外部条件。 相似文献
10.
Research suggests that conventional teaching techniques have proved largely ineffective for dealing with the problem of science students’ misconceptions or alternative frameworks. This paper reports an investigation whereby inter‐personal conflict within dyadic interactions is used as a strategy for promoting development towards correct scientific conceptions in specific areas of electrical circuits and mechanics amongst first‐year tertiary physics students. The data indicate that a large number of physics students at the tertiary level hold non‐scientific conceptions of these physical phenomena. The dyadic interaction strategy proved effective as a means of encouraging students to actively and closely consider their own thinking about basic physical concepts. Further, results highlight the importance of inter‐personal conflict in the process of conceptual change. 相似文献
11.
Zeger-Jan Kock Ruurd Taconis Sanneke Bolhuis Koeno Gravemeijer 《Research in Science Education》2013,43(2):579-597
Many students in secondary schools consider the sciences difficult and unattractive. This applies to physics in particular, a subject in which students attempt to learn and understand numerous theoretical concepts, often without much success. A case in point is the understanding of the concepts current, voltage and resistance in simple electric circuits. In response to these problems, reform initiatives in education strive for a change of the classroom culture, putting emphasis on more authentic contexts and student activities containing elements of inquiry. The challenge then becomes choosing and combining these elements in such a manner that they foster an understanding of theoretical concepts. In this article we reflect on data collected and analyzed from a series of 12 grade 9 physics lessons on simple electric circuits. Drawing from a theoretical framework based on individual (conceptual change based) and socio-cultural views on learning, instruction was designed addressing known conceptual problems and attempting to create a physics (research) culture in the classroom. As the success of the lessons was limited, the focus of the study became to understand which inherent characteristics of inquiry based instruction complicate the process of constructing conceptual understanding. From the analysis of the data collected during the enactment of the lessons three tensions emerged: the tension between open inquiry and student guidance, the tension between students developing their own ideas and getting to know accepted scientific theories, and the tension between fostering scientific interest as part of a scientific research culture and the task oriented school culture. An outlook will be given on the implications for science lessons. 相似文献
12.
Many introductory biochemistry students have problems understanding metabolism and acquiring the skills necessary to study
metabolic pathways. In this paper we suggest that this may be largely due to the use of a traditional teaching approach which
emphasises memorisation rather than understanding. We present an alternative approach to teaching carbohydrate metabolism
which is designed to promote understanding of pathways. The approach also enables regular monitoring of, and reflection on,
student progress and the identification of student reasoning and conceptual difficulties through the use of specially designed
problems. Preliminary results are presented giving examples of specific student difficulties and the extent to which they
were addressed by the alternative instructional approach. A qualitative evaluation of the approach is also presented.
Specializations: metal accumulating plants biochemical education.
Specializations: physics education, conceptual development, instructional design, improvement of tertiary science education. 相似文献
13.
This paper introduces a new way of evaluating instructional strategies by using computers. Two basic theories, instructivism and constructivism, are discussed and critically evaluated in terms of their effectiveness in conceptual learning. Despite the current popularity of constructivism, the radical form of it is criticized in this paper. The advantages and limitations of these two approaches, especially the radical forms of constructivism, are outlined. After borrowing some ideas from other effective conceptual change models, an integrative model for conceptual learning (the Inventive Model) is introduced. Two versions of multimedia physics software are developed by the authors. The first version is based on the Inventive Model and the second version based on a radical constructivist model. The effectiveness of the Inventive Model was compared with the radical constructivist approach and conventional science instruction. Students' log files were analyzed to investigate the nature and the processes of the conceptual change. A conceptual test and a knowledge test were used to compare the groups. The quantitative results showed the superiority of the Inventive Model over the other models in conceptual learning and the superiority of conventional instruction in learning the basic knowledge. The qualitative analysis showed that only the Inventive Model lead to coherent conceptual learning. It was concluded that the process of conceptual change is gradual and continuous. Analysis of students' log files revealed no moments of dramatic change in students' conceptions. 相似文献
14.
15.
Two parallel versions of a Test of Science Investigation Skills were developed to assess students' application of science
investigation skills in biology and physics contexts. Repeated pilot testing and critical appraisal were used to ensure the
validity of the tests and their equivalence. Both versions of the test were administered to 112 Year 10 science students.
The results indicated a satisfactory level of test reliability, the test set in a physics context proved to be significantly
more difficult than the test set in a biology context, and mean scores for male and female students were not significantly
different.
Specializations: science teacher education, development of problem-solving expertise, concept development and conceptual change, assessment
of laboratory work.
Specializations: Chemistry education, concept development and conceptual change, effective laboratory teaching. 相似文献
16.
Dr Mark W Hackling 《Research in Science Education》1994,24(1):147-155
This paper reports on a study of undergraduate genetics students' conceptual and procedural knowledge and how that knowledge
influences students' success in pedigree problem solving. Findings indicate that many students lack the knowledge needed to
test hypotheses relating to X-linked modes of inheritance using either patterns of inheritance or genotypes. Case study data
illustrate how these knowledge deficiencies acted as an impediment to correct and conclusive solutions of pedigree problems.
Specializations: problem solving, laboratory work, conceptual change, science teacher education. 相似文献
17.
This paper describes responses from 28 first-year university physics students to one question of a written test which was
followed up by an interview. The study has two main research aims. Firstly, it characterises the conceptual structures of
students regarding the phenomenon in question. As well as being interesting in their own right, these student understandings
cast light on some broader issues regarding understanding of field representations. While students' understandings of circuit
electricity are well described in the existing science education literature, their understandings of field phenomena are not.
Secondly, it throws light on theoretical questions about the SOLO Taxonomy, which is the framework used to study the students'
conceptual structures. Of particular interest is the nature of student thinking that marks transition from the Concrete Symbolic
to the Formal SOLO mode in this area.
Specializations: physics education, electricity and magnetism, conceptual structures, SOLO Taxonomy.
Specializations: SOLO Taxonomy, conceptual structures, mathematics education. 相似文献
18.
The focus of this study was on the investigation of a laboratory instructional program on electricity designed for conceptual
development using constructivist principles for conceptual change. This approach was compared with a traditional laboratory
approach in a quasi-experimental design. The sample was 247 grade 10 students (boys) in a large non-government urban school.
Covariance analysis with the corresponding pretest as covariate showed statistically and educationally significant gains for
the experimental group on cognitive but not attitudinal outcomes when compared to the traditional group. Student and teacher
interview data provide some evidence for the success of the experimental approach.
Specializations: physics education, constructivist approaches to in practical work.
Specializations: science teacher education, learning environments, conceptual change. 相似文献
19.
Russell Tytler 《Research in Science Education》1994,24(1):338-347
A study of primary school children's explanations of a range of phenomena concerning air pressure revealed considerable fluidity
in their use of conceptions. A measure of consistency was developed and applied to children's written and oral explanations
in a range of contexts. While the results showed a general trend with age toward more abstract, ‘generalizable’ conceptions,
the notion of parsimony was found to be problematic on a number of levels. Children do not apply a single conception to a
phenomenon, but rather operate with multiple conceptions in their explanations, complicating the whole notion of consistency.
Moreover, as they develop and apply more advanced conceptions, children inevitably display temporary reductions in consistency.
These findings suggest a rather more complex model of conceptual advance than implied in the literature on ‘conceptual change’.
Specializations: children's science explanations, conceptual change, primary science teacher education, physics education. 相似文献
20.
Refik Dilber Ibrahim Karaman Bahattin Duzgun 《Educational Research and Evaluation》2013,19(3):203-222
The aim of this study was to investigate the effectiveness of conceptual change-based instruction and traditionally designed physics instruction on students' understanding of projectile motion concepts. Misconceptions related to projectile motion concepts were determined by related literature on this subject. Accordingly, the Projectile Motion Concepts Test was developed. The data were obtained through 43 students in an experimental group taught with learning activities based on conceptual change instruction and 39 students in a control group who followed traditional classroom instruction. The results showed that conceptual change-based instruction caused significantly better acquisition of conceptual change of projectile motion concepts than the traditional instruction. 相似文献