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1.
Özgecan Taştan Eylem Yalçınkaya Yezdan Boz 《Journal of Science Education and Technology》2008,17(5):444-453
The aim of this study is to compare the effectiveness of conceptual change text instruction (CCT) in the context of energy
in chemical reactions. The subjects of the study were 60, 10th grade students at a high school, who were in two different
classes and taught by the same teacher. One of the classes was randomly selected as the experimental group in which CCT instruction
was applied, and the other as the control group in which traditional teaching method was used. The data were obtained through
the use of Energy Concept Test (ECT), the Attitude Scale towards Chemistry (ASC) and Science Process Skill Test (SPST). In
order to find out the effect of the conceptual change text on students’ learning of energy concept, independent sample t-tests, ANCOVA (analysis of covariance) and ANOVA (analysis of variance) were used. Results revealed that there was a statistically
significant mean difference between the experimental and control group in terms of students’ ECT total mean scores; however,
there was no statistically significant difference between the experimental and control group in terms of students’ attitude
towards chemistry. These findings suggest that conceptual change text instruction enhances the understanding and achievement. 相似文献
2.
Zvia Kaberman Yehudit Judy Dori 《International Journal of Science and Mathematics Education》2009,7(3):597-625
A new learning unit in chemistry, Case-based Computerized Laboratories (CCL) and Computerized Molecular Modeling (CMM) was developed at the Technion. The CCL and CMM curriculum integrates computerized desktop experiments and molecular
modeling with an emphasis on scientific inquiry and case studies. Our research aimed at investigating the effect of the CCL
and CMM learning environment on students’ higher-order thinking skills of question posing, inquiry, and modeling. The experimental
group included 614 honors 12th grade chemistry students from high schools in Israel who studied according to this learning
unit. The comparison group consisted of 155 12th grade chemistry honors students who studied other chemistry programs. Pre-
and post-tests questionnaires were used to assess students’ higher-order thinking skills. Students’ responses were analyzed
using content analysis rubrics and their statistical analysis. Our findings indicated that the scores of the experimental
group students improved significantly in question posing, inquiry and modeling skills from the pre-test to the post-test.
The net gain scores of the experimental group students were significantly higher than those of their comparison peers in all
three examined skills. In modeling skills, experimental group students significantly improved their achievements in making
the transfer from 3D models to structural formulae, but only about half of them were able to transfer from formulae to 3D
models. By presenting a case-based chemistry assessment tool and content analysis of students’ responses in this paper, we
enable teachers and educators to analyze their students’ higher-order thinking skills both qualitatively and quantitatively. 相似文献
3.
Pinar Seda Çetin Ebru Kaya Ömer Geban 《Journal of Science Education and Technology》2009,18(2):130-137
The aim of this study is to investigate the effectiveness of conceptual change oriented instruction (CCOI) over traditionally
designed chemistry instruction (TDCI) on overcoming 10th grade students’ misconceptions on gases concepts. In addition, the
effect of gender difference on students’ understanding of gases concepts was investigated. The subjects of this study consisted
of 74 10th grade students from two chemistry classes. One of the classes was assigned as experimental group and the other
group was assigned as control group. The experimental group was instructed with CCOI and the control group was instructed
by TDCI. Gases Concept Test (GCT) was administered to both groups as pre- and post-tests to measure the students’ conceptual
understanding. The results showed that students in the experimental group got higher average scores from Gases Concept Test.
Also, a significant difference was found between the performance of females and that of males in terms of understanding gases
concepts in favor of males. 相似文献
4.
This study examined the effect of computer-assisted instruction (CAI), used as a problem-solving supplement to classroom instruction, on students' understanding of chemical formulas and mole concept, their attitudes toward chemistry subjects, and CAI. The objective was to assess the effectiveness of CAI over recitation hours when both teaching methods were used as a supplement to the traditional chemistry instruction. We randomly selected two classes in a secondary school. Each teaching strategy was randomly assigned to one class. The experimental group received supplementary instruction delivered via CAI, while the control group received similar instruction through recitation hours. The data were analyzed using two-way analysis of variance and t-test. It was found that the students who used the CAI accompanied with lectures scored significantly higher than those who attended recitation hours, in terms of school subject achievement in chemistry and attitudes toward chemistry subjects. In addition, there was a significant improvement in the attitudes of students in the experimental group toward the use of computers in a chemistry course. There was no significant difference between the performances of females versus males in each treatment group. 相似文献
5.
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
6.
The purpose of this study is to examine the effect of creative drama-based instruction on seventh graders’ science achievements
in the ecology and matter cycles unit and their attitudes toward science. The study is an experimental study carried out in
one of the public elementary schools in Turkey during 2005–2006 schooling year. An ecological concept achievement test was
developed and administered to 45 students in two classes (as control and experimental group) of an elementary school before
and after the treatment. The experimental group received creative drama-based instruction and the control group received traditional
instruction. A guiding instruction material which contains six lesson plans in the subject was constructed for the teacher
to administer creative drama-based instruction. The topics of ecosystems and matter cycles were taught to the both of groups
for 3 weeks. A science attitude test was administered to both groups before and after the treatment. The results revealed
a statistically significant difference between the mean scores of the both groups with respect to achievement in the ecology
concepts and median of the attitudes toward science in favour of the experimental group after the treatment. 相似文献
7.
Haluk ?zmen 《Asia Pacific Education Review》2007,8(3):413-425
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
8.
Autonomy in Science Education: A Practical Approach in Attitude Shifting Towards Science Learning 总被引：1，自引：1，他引：0
Pasl A. Jalil M. Z. Abu Sbeih M. Boujettif R. Barakat 《Journal of Science Education and Technology》2009,18(6):476-486
This work describes a 2-year study in teaching school science, based on the stimulation of higher thinking levels in learning
science using a highly student-centred and constructivist learning approach. We sought to shift and strengthen students’ positive
attitudes towards science learning, self-efficacy towards invention, and achievement. Focusing on an important aspect of student’s
positive attitude towards learning, their preference (like/dislike) towards independent study with minimal or no teacher interference,
which leads to increased learning autonomy, was investigated. The main research was conducted on elementary school students;
271 grade level one (G1; 6 years old) to grade level four (G4; 10 years old) participated in this study. As a result of this
study, it was found that: (1) 73% of the students preferred minimal or no explanation at all, favoring to be left with the
challenge of finding out what to do, compared to 20% of the control group, indicating a positive attitude shift in their learning
approaches. (2) The experimental group achieved slightly more (9.5% difference) than the control group in knowledge-comprehension-level
based exam; however, the experimental group scored much higher (63% difference) in challenging exams which required higher
thinking levels. (3) The same trend was also observed in self-efficacy toward invention, where 82% of the experimental group
saw themselves as possible inventors compared to 37% of the control group. 相似文献
9.
This study was designed to compare the effects of Team Assisted Individualization (TAI) and Student Teams-Achievement Divisions
(STAD) on fourth grade students’ academic achievement in and attitudes towards mathematics. Seven classes of a school were
randomly selected for this experimental study. Two of these were given instruction through TAI; two through STAD, and the
remaining three were treated as a control group. For the purpose of the data analysis regarding academic achievement, the
3 X 1 covariance analysis was used to compare the groups. As a result of this comparison, both the TAI and STAD methods were
found to have positive effects (d = 1.003 for TAI and d = 0.40 for STAD) on students’ academic achievement in mathematics. The pairwise comparisons showed that the TAI method had
a more significant effect than the STAD method. The scores for the attitude towards mathematics were analyzed by using non-parametric
statistics. As a result of this analysis, no significant difference was observed regarding students’ attitudes towards mathematics. 相似文献
10.
A Study on Teaching Gases to Prospective Primary Science Teachers Through Problem-Based Learning 总被引：1，自引：0，他引：1
Erdal Senocak Yavuz Taskesenligil Mustafa Sozbilir 《Research in Science Education》2007,37(3):279-290
The aim of this study was to compare the achievement of prospective primary science teachers in a problem-based curriculum
with those in a conventional primary science teacher preparation program with regard to success in learning about gases and
developing positive attitudes towards chemistry. The subjects of the study were 101 first year undergraduate students, who
were in two different classes and who were taught by the same lecturer. One of the classes was randomly selected as the intervention
group in which problem-based learning (PBL) was used, and the other as the control in which conventional teaching methods
were used. The data were obtained through use of the gases diagnostic test (GDT), the chemistry attitude scale (CAS), and
scales specific to students’ evaluation of PBL such as the peer evaluation scale (PES), self evaluation scale (SES), tutor’s
performance evaluation scale (TPES) and students’ evaluation of PBL scale (SEPBLS). Data were analysed using SPSS 10.0 (Statistical
Package for Social Sciences). In order to find out the effect of the intervention (PBL) on students’ learning of gases, independent
sample t-tests and ANCOVA (analysis of co-variance) were used. The results obtained from the study showed that there was a statistically
significant difference between the experimental and control groups in terms of students’ GDT total mean scores and, their
attitude towards chemistry, as well as PBL has a significant effect on the development of students’ skills such as self-directed
learning, cooperative learning and critical thinking. 相似文献
11.
The present study focused on investigating the effectiveness of instruction via newly developed teaching materials based on
cooperative learning when compared to a traditional approach, on ninth grade students’ understanding of metallic bonding.
Fifty-seven ninth grade science students from two science classes in the same high school participated in this study. The
same teacher taught metallic bonding with cooperative learning to an experimental group (N = 28) and with a traditional teacher centred approach to a control group (N = 29). Students’ conceptual understanding of metallic bonding was measured using the Metallic Bonding Concept Test. The results
from the Student’s t test indicated that the mean score of the students in the experimental group was significantly higher in the experimental
group (78.60, SD = 8.62), than in the control group (54.33, SD = 9.11) after treatment. In the light of the results from the
concept test and individual interviews, the misconceptions related to metallic bonding were found less in the experimental
group than traditional. Five of these misconceptions were firstly identified in this study. The individual interviews which
were done with students from experimental group immediately after the instruction showed that students had positive perceptions
about their cooperative work experiences. 相似文献
12.
The purpose of this study was to investigate and compare the impact of Internet Virtual Physics Laboratory (IVPL) instruction
with traditional laboratory instruction in physics academic achievement, performance of science process skills, and computer
attitudes of tenth grade students. One-hundred and fifty students from four classes at one private senior high school in Taoyuan
Country, Taiwan, R.O.C. were sampled. All four classes contained 75 students who were equally divided into an experimental
group and a control group. The pre-test results indicated that the students’ entry-level physics academic achievement, science
process skills, and computer attitudes were equal for both groups. On the post-test, the experimental group achieved significantly
higher mean scores in physics academic achievement and science process skills. There was no significant difference in computer
attitudes between the groups. We concluded that the IVPL had potential to help tenth graders improve their physics academic
achievement and science process skills. 相似文献
13.
The research questions addressed in this study were: what types of epistemological beliefs do elementary students have; what
types of metacognition do elementary students have; and what are the relationships among students’ perceived characteristics
of constructivist learning environment, metacognition, and epistemological beliefs. A total of 626 students enrolled in sixth,
seventh, and eight grades of nine elementary public schools located in Ankara, Turkey constituted the participants of this
study. Constructivist learning environment survey (CLES), Junior metacognitive awareness inventory (Jr. MAI), and Schommer
epistemological belief questionnaire (EB) were administered to students. Factor Analysis of Jr. MAI revealed both knowledge
of cognition and regulation of cognition items were loaded into one factor. Confirmatory factor analysis of EB revealed a
four factor structure namely innate ability, quick learning, omniscient authority, and certain knowledge. Regression analyses
revealed that metacognition and omniscient authority were significant predictors of personal relevance dimension of CLES.
Metacognition was found as the only predictor of the student negotiation. Innate ability and metacognition significantly contributed
to uncertainty. This study revealed that the elementary students with different mastery levels hold different epistemological
beliefs and multi-faceted nature of elementary school students’ metacognition was seemed to be supported with this study.
It was found that metacognition contributed to model more than epistemological beliefs for all three dimensions of CLES. 相似文献
14.
Nicholas Vernadakis Eleni Zetou Efi Tsitskari Maria Giannousi Efthimis Kioumourtzoglou 《Education and Information Technologies》2008,13(3):167-183
The purpose of this study was to examine the effect of multimedia computer-assisted instruction (MCAI), traditional instruction
(TI), and combined instruction (CI) methods on learning the skill of shooting in basketball. Additionally, a comparison of
the students’ attitudes towards the MCAI and TI methods was made. Seventy-five middle school students of seventh and eighth
grade were randomly assigned into three teaching method groups: TI, MCAI and CI. Each group received ten 45-min periods of
instruction divided into three sections: (a) 5-min introduction, (b) 30-min instructional time and (c) 10-min questions and
review. Students took pre-, post-, and retention written test covering techniques and rules of the games. Participants in
the CI group also completed a post-test attitude survey towards the MCAI and TI methods. Two-way analysis of variances (ANOVA),
with repeated measures on the last factor, were conducted to determine effect of method groups (MCAI, TI, CI) and measures
(pre-test, post-test, re-test) on knowledge test. Paired samples t-test analyses were conducted to measure students’ attitude
towards the MCAI and TI methods. Post-test results indicated no significant differences between the groups concerning the
written test. Nevertheless, the attitude test scores of the CI group were more favourable to MCAI method than the TI method.
Retention test results showed that groups retained the knowledge acquisition. However, the combine method of instruction tended
to be the most effective on cognitive learning. 相似文献
15.
Sri Rahayu A. L. Chandrasegaran David F. Treagust Masakazu Kita Suhadi Ibnu 《International Journal of Science and Mathematics Education》2011,9(6):1439-1458
This study was a mixed quantitative–qualitative research to evaluate the efficacy of a designed student-centred instructional
(DSCI) program for teaching about acids and bases. The teaching innovation was designed based on constructivist, hands-on
inquiry and context-based approaches and implemented in seven 45-min lessons with a class of 36 grade 11 students (experimental
group) from a public senior high school in Indonesia. Another class of 38 students (comparison group) from the same school
was instructed using a traditional teacher-centred approach. Data were obtained using a (1) 12-item achievement test on acids
and bases that was administered to both groups as a pretest and a posttest, (2) self-evaluation 13-item questionnaire on students’
perceptions of their competence and confidence in carrying out the inquiry activities that was administered to the experimental
group and (3) 3-item open-ended questionnaire on students’ perceptions of the instructional process using the DSCI that was
administered to the experimental group. The results of the study showed that the teaching innovation was effective in improving
students’ understanding of acid–base concepts with significant difference between the two groups on the posttest mean scores.
Moreover, the effectiveness of the innovation was supported by an increase in students’ interest in learning science as indicated
by their (1) positive perceptions of their engagement and competence in doing inquiry activities, (2) positive perceptions
of the learning environment and (3) positive outcome expectations. The findings have implications for chemistry teaching in
any institution with similar achieving students as well as for the professional development of teachers. 相似文献
16.
Leman Tarhan Hulya Ayar-Kayali Raziye Ozturk Urek Burcin Acar 《Research in Science Education》2008,38(3):285-300
This research study aims to examine the effectiveness of a problem-based learning (PBL) on 9th grade students’ understanding
of intermolecular forces (dipole–dipole forces, London dispersion forces and hydrogen bonding). The student’s alternate conceptions
about intermolecular bonding and their beliefs about PBL were also measured. Seventy-eight 9th grade students were stratified
by cognitive levels and then randomly assigned to experimental (PBL, 40 students) and control (lecture-style teaching, 38
students) groups. Following a preparatory lesson where activation and remediation of existing knowledge occur, a pre-test
was given, and no significant difference was found between the two groups of students (p > .05). After the instruction was completed, a post-test and also a questionnaire related to the quality of the problem,
the teacher’s role and group functioning were administered. Results from the post-test of both groups (p < .05) and questionnaire showed that PBL is affective on students’ achievement, remedying formation of alternate conceptions
and also social skills. 相似文献
17.
This study investigated the differential effects of two modes of instructional program (conceptual change oriented and traditionally designed) and gender difference on students' understanding of heat and temperature concepts, and their attitudes toward science as a school subject. The subjects of this study consisted of 72 seventh grade students from two General Science Classes taking the course from the same teacher. Each teaching method was randomly assigned to one class. The experimental group received reinforcement via the conceptual change texts while the control group utilized traditionally designed science texts over a period of four weeks. Analysis of covariance was used. Logical thinking ability was taken as a covariate. The results showed that the conceptual change oriented instruction produced significantly greater achievement in understanding of heat and temperature concepts. The result for science attitudes as a school subject showed no significant difference between the experimental and control groups. Also, no significant difference was found between the performance of females and that of males in terms of learning heat and temperature concepts and attitudes toward science, but the interaction of treatment regarding to gender was significant for learning the concepts. In addition, it was found that students' logical thinking ability accounted for a significant portion of variation in heat and temperature concepts achievement. 相似文献
18.
Salem A. Al khawaldeh Ali M. Al Olaimat 《Journal of Science Education and Technology》2010,19(2):115-125
The present study conducted to investigate the contribution of conceptual change texts, accompanied by concept mapping instruction
to eleventh-grade students’ understanding of cellular respiration concepts, and their retention of this understanding. Cellular
respiration concepts test was developed as a result of examination of related literature and interviews with teachers regarding
their observations of students’ difficulties. The test was administrated as pre-test, post-test, and delayed post-test to
a total of 70 eleventh-grade students in two classes of the same high school in an urban area, taught by the same teacher.
The experimental group was a class of 34 students who received conceptual change texts accompanied by concept mapping instruction.
A class of 36 students comprised the control group who received traditional instruction. Besides treatment, previous understanding
and logical thinking ability were other independent variables involved in this study. The results showed that logical thinking,
treatment, previous understanding of cellular respiration concepts each made a statistically significant contribution to the
variation in students’ understanding of cellular respiration concepts. The result also showed that conceptual change texts
accompanied by concept mapping instruction was significantly better than traditional instruction in retention of this understanding. 相似文献
19.
Assessing high school chemistry students’ modeling sub-skills in a computerized molecular modeling learning environment 总被引：1，自引：0，他引：1
Much knowledge in chemistry exists at a molecular level, inaccessible to direct perception. Chemistry instruction should therefore
include multiple visual representations, such as molecular models and symbols. This study describes the implementation and
assessment of a learning unit designed for 12th grade chemistry honors students. The organic chemistry part of the unit was
taught in a Computerized Molecular Modeling (CMM) learning environment, where students explored daily life organic molecules
through assignments and two CMM software packages. The research objective was to investigate the effect of the CMM learning
unit on students’ modeling skill and sub-skills, including (a) drawing and transferring between a molecular formula, a structural
formula, and a model, and (b) transferring between symbols/models and microscopic, macroscopic, and process chemistry understanding
levels. About 600 12th grade chemistry students who studied the CMM unit responded to a reflection questionnaire, and were
assessed for their modeling skill and sub-skills via pre- and post-case-based questionnaires. Students indicated that the
CMM environment contributed to their understanding of the four chemistry understanding levels and the links among them. Students
significantly improved their scores in the five modeling sub-skills. As the complexity of the modeling assignments increased,
the number of students who responded correctly and fully decreased. We present a hierarchy of modeling sub-skills, starting
with understanding symbols and molecular structures, and ending with mastering the four chemistry understanding levels. We
recommend that chemical educators use case-based tools to assess their students’ modeling skill and validate the initial hierarchy
with a different set of questions. 相似文献
20.
The purpose of the study was to investigate the effects of individual versus cooperative learning on different components of students’ functioning. As a theoretical framework to analyse these processes we used CAMS model (Dansereau, 1986; O’Donnell & Dansereau, 1992), which includes four levels of students’ functioning: cognitive (C), affective (A), metacognitive (M) and social (S). 373 fifth grade students (170 in experimental group and 203 in control group) from nine different primary schools participated in the research. In the experimental group cooperative learning was introduced for one in four lessons in two subjects: mathematics and Slovene language. The control group received the traditional way of teaching. Statistical analysis showed strong positive effects of cooperative learning on achievement in both subjects. No other variable showed differential change. 相似文献