共查询到20条相似文献，搜索用时 31 毫秒
1.
2.
Janice M. Wilson 《Research in Science Education》1998,28(4):429-446
This study examines differences in conceptual knowledge representations among three groups of students with different levels
of study of chemistry. Variation in the structural characteristics of participants’ concept maps on the topic of acid-base
equilibrium were sought by indirect means. Year 12 secondary chemistry students, undergraduate chemistry majors and honours,
masters and doctoral candidates participated in the study. Paired propositional links in the concept maps for the three groups
were analysed by the scaling algorithms “Pathfinder” and multidimensional scaling. Results show differences among groups in
the structural significance in the networks of abstract process-related nodes and matter-related nodes. Implications for theories
of conceptual change are discussed. 相似文献
3.
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
4.
Chung-Yuan Hsu Chin-Chung Tsai Jyh-Chong Liang 《Journal of Science Education and Technology》2011,20(5):482-493
Educational researchers have suggested that computer games have a profound influence on students’ motivation, knowledge construction,
and learning performance, but little empirical research has targeted preschoolers. Thus, the purpose of the present study
was to investigate the effects of implementing a computer game that integrates the prediction-observation-explanation (POE)
strategy (White and Gunstone in Probing understanding. Routledge, New York, 1992) on facilitating preschoolers’ acquisition of scientific concepts regarding light and shadow. The children’s alternative
conceptions were explored as well. Fifty participants were randomly assigned into either an experimental group that played
a computer game integrating the POE model or a control group that played a non-POE computer game. By assessing the students’
conceptual understanding through interviews, this study revealed that the students in the experimental group significantly
outperformed their counterparts in the concepts regarding “shadow formation in daylight” and “shadow orientation.” However,
children in both groups, after playing the games, still expressed some alternative conceptions such as “Shadows always appear
behind a person” and “Shadows should be on the same side as the sun.” 相似文献
5.
Sevgi Aydin Nurdane Aydemir Yezdan Boz Ayla Cetin-Dindar Oktay Bektas 《Journal of Science Education and Technology》2009,18(6):518-534
The present study aimed to evaluate whether a chemistry laboratory course called “Laboratory Experiments in Science Education”
based on constructivist instruction accompanied with concept mapping enhanced pre-service chemistry teachers’ conceptual understanding.
Data were collected from five pre-service chemistry teachers at a university in Ankara by means of a concept test and semi-structured
interviews. Results showed that pre-service teachers had some alternative conceptions about chemistry topics. Moreover, using
constructivist instruction accompanied with concept maps as an instructional tool was effective to promote conceptual understanding.
Participants thought that concept maps were useful especially in recognizing the relation between different chemistry concepts. 相似文献
6.
Doris B. Chin Ilsa M. Dohmen Britte H. Cheng Marily A. Oppezzo Catherine C. Chase Daniel L. Schwartz 《Educational technology research and development : ETR & D》2010,58(6):649-669
One valuable goal of instructional technologies in K-12 education is to prepare students for future learning. Two classroom
studies examined whether Teachable Agents (TA) achieves this goal. TA is an instructional technology that draws on the social
metaphor of teaching a computer agent to help students learn. Students teach their agent by creating concept maps. Artificial
intelligence enables TA to use the concept maps to answer questions, thereby providing interactivity, a model of thinking,
and feedback. Elementary schoolchildren learning science with TA exhibited “added-value” learning that did not adversely affect
the “basic-value” they gained from their regular curriculum, despite trade-offs in instructional time. Moreover, TA prepared
students to learn new science content from their regular lessons, even when they were no longer using the software. 相似文献
7.
Guilaine Menotti Graciela Ricco 《European Journal of Psychology of Education - EJPE》2007,22(4):477-495
Wishing to explore the complexity of the conceptual, didactic and institutional aspects of learning a scientifically defined
object of knowledge, we chose to study the link between the personal relation to numeration developed by six-year-old pupils
in first grade (“cours préparatoire” the first level of primary school in France), and more particularly, the relationship
between the construction of pupils’ relation to the concept of “tens” and the didactic practice of their teachers during the
lessons.
Our study shows that both teachers establish “strong” didactic contracts, leaving it up to the pupils to develop on their
own the capacity of making mathematical decisions and destabilizing the procedure of counting one by one. There is a difference
between classes in the articulation of knowledge and know-how. In the ZEP class learning is centered on know-how; in the other
class knowledge and know-how are simply juxtaposed, their relationship is never made explicit. The result is that only 4 children
out of 42 (the two classes taken together) can work with both. All four belong to the categories of “good” or “very good”
students. 相似文献
8.
Reflective learning can assist a learner’s purposeful and conscious manipulation of ideas toward meaningful learning and knowledge
integration. Blogs have been used to support reflection, but Blogs usually do not provide overt mechanisms for students to
make connections between different parts of an experience, which is integral to reflective activity. A blogging-mapping tool
was designed to support the reflective learning process. The tool allowed students to write blog posts, attach up to five
keywords to each post, and link the keywords on a concept map. This study aimed to seek patterns of participants’ use of the
tool, including evidence of reflective learning, identified as integration between concept maps and blogs. Nine graduate students
participated in the study for a semester. Data analysis included examining concept maps for knowledge integration over time.
Participants’ various mapping activities implied different levels of thinking. Some participants’ final concept maps showed
signs that they tried to integrate knowledge around the content area. Yet, the inconsistent and inconclusive patterns of participants’
concept mapping activities signaled that more strategies were needed to sustain their commitment. 相似文献
9.
John C. Smart 《Research in higher education》2010,51(5):468-482
The findings of this study show wide variation in the learning patterns of college students in the academic environments of
Holland’s theory and, more importantly, that such variability differs based on the level of “consistency” or “inconsistency”
of the environments. Differences in the learning patterns of students in “consistent” academic environments tend to be more
in alignment with the premises of Holland’s theory than those of students in “inconsistent” environments. Implications of
these findings for future research using Holland’s theory to understand longitudinal patterns of change and stability in the
attitudes, interests, and abilities of college students are discussed, and attention is devoted to policy development and
practical implications for academic advisors, career counselors, campus leaders, and governmental and accrediting officials. 相似文献
10.
Dr Uri Zoller 《Research in Science Education》1996,26(3):317-326
Students at all ages hold a wide variety of scientifically faulty knowledge structures called “misconceptions”. As far as
misconceptions in chemistry are concerned, college science students are no exception. Systematic administration to freshman
biology majors of specially-designed mid-term and term higher-order cognitive skills (HOCS)-oriented examinations within the
courses “General and Inorganic Chemistry” and “Introduction to Modern Organic Chemistry” proved these examinations to be very
effective in revealing and distinguishing between students'misconceptions, misunderstandings, and“no conceptions”. Several of these have never been mentioned before in the relevant research literature. Accordingly, reflective teaching
strategies to overcome this “misconceptions problem” and affect meaningfully subsequent learning have been explored and implemented
within our longitudinal effort to develop students' HOCS. The study results combined with accumulated experience indicate
that properly designed HOCS-oriented examinations may be very effective for revealing, but notper se for overcoming, students' misconceptions. However, within HOCS-oriented chemistry teaching, the assessment of students by
such examinations is very useful particularly for providing data for remediation purposes via appropriate modification of
the teaching strategies. Eventually, this leads to gains in students' HOCS which is in line with the overall goal of the current
reform in science education. 相似文献
11.
Georgios Tsaparlis 《Research in Science Education》1997,27(2):271-287
Students start the undergraduate quantum chemistry course with incomplete knowledge and many conceptual difficulties about
quantum-chemical concepts. This work investigated the impact an undergraduate quantum chemistry course has on students’ knowledge
and understanding of atomic orbitals, molecular orbitals and related concepts. A “post-factum” analysis of examination data
from this course reveals that students; do not have a clear understanding of the concepts of atomic and molecular orbitals
as well as of Slater determinants; have difficulty in understanding the conceptual similarity between real and complex mathematical
forms of atomic orbitals; confuse the various atomic orbital representations; and, do not realise the approximate nature of
atomic orbitals for many-electron atoms. Difficulties with other related concepts are revealed also. Some promising strategies
for instruction and suggestions for secondary and general chemistry curricula are discussed. 相似文献
12.
This study explored and documented the frequencies of conceptual difficulties confronted by college students seeking to understand the basic processes of cellular respiration. Using concept maps, clinical interviews and an open-ended instrument, viewpoints were elicited from 100 (novice) introductory biology students before and after relevant instruction in cellular respiration and from 100 (experienced) students enrolled in advanced biology courses. Chi-square analyses revealed significant differences among groups in the frequencies of scientifically acceptable and alternative conceptions. The findings suggest that novices harbor a wide range of conceptual difficulties that constrain their understanding of cellular respiration. Furthermore, many of these difficulties persist after instruction and new ones arise. Often these conceptual problems remain intact among experienced students despite well-planned, repeated instruction at advanced levels. 相似文献
13.
Gunnar Friege Gunter Lind 《International Journal of Science and Mathematics Education》2006,4(3):437-465
Based on empirical findings and theoretical considerations related to the field of expertise research, the importance of “types”
and “qualities” of knowledge in relation to problem solving in physics was investigated. The students (N =138) in this study had a level of competence that corresponds to an intensive beginner college course in physics. It was
found that conceptual declarative knowledge and problem scheme knowledge are excellent predictors of problem solving performance.
However, a detailed analysis shows that the first knowledge type is more typical for low achievers (novices) in physics problem
solving whereas the second type is predominately used by high achievers (experts). Regarding types and qualities of knowledge
and their relations to problem solving, the results of a multidimensional scaling analysis (MDS) indicate that two dimensions
of knowledge can be distinguished. On the extreme limits of the first dimension, which could be named “problem solving relevance
vs. structure of discipline”, are the types of knowledge and the qualities of knowledge, respectively. The second dimension
of knowledge could be named “single knowledge elements vs. organised knowledge units”. There are types of knowledge as well
as qualities of knowledge distributed along this dimension. Consequences of these results for improving physics education
are discussed. 相似文献
14.
The problem addressed by this study is that first-year college chemistry students learn little of the conceptual material associated with chemistry experiments they perform. The thesis of this research is that the construction of prelab and postlab concept maps help students understand the concepts involved in the experiments they perform. The study was conducted using 32 non–science majors enrolled in a first-year chemistry course. The experimental group constructed prelab and postlab concept maps, while the control group wrote essays explaining the conceptual chemistry of the four experiments used in this study. Both groups took 25-item achievement tests 1 week after each experiment. Prelab and postlab concept maps were scored and evaluated for significant differences. Five students were interviewed to investigate their perceptions regarding the usefulness of concept maps in chemistry laboratories. No significant differences were found between treatment groups with respect to students' conceptual understanding as determined by the multiple choice achievement tests. Students responded very positively toward the use of concepts maps in the laboratory. They felt strongly that constructing prelab and postlab concept maps helped them understand the conceptual chemistry of the experiments. © 1998 John Wiley & Sons, Inc. J Res Sci Teach 35: 1015–1029, 1998 相似文献
15.
Atom Surprise: Using Theatre in Primary Science Education 总被引：1，自引：1，他引：0
Early exposure to science may have a lifelong effect on children’s attitudes towards science and their motivation to learn
science in later life. Out-of-class environments can play a significant role in creating favourable attitudes, while contributing
to conceptual learning. Educational science theatre is one form of an out-of-class environment, which has received little
research attention. This study aims to describe affective and cognitive learning outcomes of watching such a play and to point
to connections between theatrical elements and specific outcomes. “Atom Surprise” is a play portraying several concepts on
the topic of matter. A mixed methods approach was adopted to investigate the knowledge and attitudes of children (grades 1–6)
from two different school settings who watched the play. Data were gathered using questionnaires and in-depth interviews.
Analysis suggested that in both schools children’s knowledge on the topic of matter increased after the play with younger
children gaining more conceptual knowledge than their older peers. In the public school girls showed greater gains in conceptual
knowledge than boys. No significant changes in students’ general attitudes towards science were found, however, students demonstrated
positive changes towards science learning. Theatrical elements that seemed to be important in children’s recollection of the
play were the narrative, props and stage effects, and characters. In the children’s memory, science was intertwined with the
theatrical elements. Nonetheless, children could distinguish well between scientific facts and the fictive narrative. 相似文献
16.
The theoretical background and different methods ofconcept mapping for use in teaching and in research on learning processes are discussed. Two mathematical projects, one on fractions and one on geometry, are presented in more detail. In the first one special characteristics of concept maps were elaborated. In the second one concept mapping allowed students' individual understanding to be monitored over time and provided information about students' conceptual understanding that would not have been obtained using other methods. Regarding the students' individual concept maps in more detail there were some additional findings: (i) The characteristics of the maps change remarkably from fourth grade to sixth grade; (ii) There is some evidence that prior knowledge related to some mathematical topics plays a very important role in students' learning behaviour and in their achievement; (iii) Concept maps provide information about how individual students relate concepts to form organised conceptual frameworks; (iv) Long-term difficulties with specific concepts are able to be traced. These findings are discussed with regard to results of other studies as well as to their implications for the teaching of mathematics in the classroom. 相似文献
17.
Mehmet Sahin 《Journal of Science Education and Technology》2010,19(3):266-275
This study investigated the effects of problem-based learning on students’ beliefs about physics and physics learning and
conceptual understanding of Newtonian mechanics. The study further examines the relationship between students’ beliefs about
physics and their conceptual understanding of mechanics concepts. Participants were 124 Turkish university students (PBL = 55,
traditional = 69) enrolled in a calculus-based introductory physics class. Students’ beliefs about physics and physics learning
and their physics conceptual understanding were measured with the Colorado Learning Attitudes about Science Survey (CLASS)
and the Force Concept Inventory (FCI), respectively. Repeated measures analysis of variance of how PBL influence beliefs and
conceptual understanding were performed. The PBL group showed significantly higher conceptual learning gains in FCI than the
traditional group. PBL approach showed no influence on students’ beliefs about physics; both groups displayed similar beliefs.
A significant positive correlation was found between beliefs and conceptual understanding. Students with more expert-like
beliefs at the beginning of the semester were more likely to obtain higher conceptual understanding scores at the end of the
semester. Suggestions are presented regarding the implementation of the PBL approach. 相似文献
18.
Seyede Mehrnoush Hosseini 《Asia Pacific Education Review》2011,12(2):263-270
The research aims to define SECI model of knowledge creation (socialization, externalization, combination, and internalization)
as a framework of Virtual class management which can lead to better online teaching–learning mechanisms as well as knowledge
creation. It has used qualitative research methodology including researcher’s close observation and attendance in the online
MBA classes of Iran University of Science and Technology for one academic semester as well as semi-structured interviews with
the professional facilitators. The article has defined a practical SECI framework in which 4 phases of socialization, externalization,
combination, internalization, and their required “ba” contexts are explained with regards to tasks and responsibilities of
both students and facilitators. 相似文献
19.
Huang-Yao Hong Fei-Ching Chen Ching Sing Chai Wen-Ching Chan 《Instructional Science》2011,39(4):467-482
This study investigated the effects of engaging students to collectively learn and work with knowledge in a computer-supported
collaborative learning environment called Knowledge Forum on their views about knowledge building theory and practice. Participants
were 24 teacher-education students who took a required course titled “Integrating Theory and Practice in Teaching.” Data mainly
came from (1) student discourse recorded in a Knowledge Forum database, (2) a survey that examined students’ views about knowledge
building, and (3) interviews with regard to students’ perceived barriers to implementing knowledge building theory in teaching.
Findings suggest that with sustained discourse to construct their collective understanding of the relationships between theory
and practice in teaching for a semester, the participants were able to attain more informed and practical views about knowledge
building theory. In addition, students’ perceived barriers to implementing knowledge building in teaching were identified
and strategies to help overcome these barriers discussed. 相似文献
20.
The potential of informal sources of science learning to supplement and interact with formal classroom science is receiving
increasing recognition and attention in the research literature. In this study, a phenomenographic approach was used to determine
changes in levels of understanding of 27 grade 7 primary school children as a result of a visit to an interactive science
centre. The results showed that most students did change their levels of understanding of aspects of the concept “sound”.
The study also provides information which will be of assistance to teachers on the levels of understanding displayed by students
on this concept.
Specializations: informal science learning, science curriculum
Specializations: science education, science teacher education, conceptual change, learning environments. 相似文献