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A systems-based classroom intervention on environmental education was designed for seventh grade students; the results were evaluated to see its impact on the development of systems thinking skills and standard science achievement and whether the systems approach is a more effective way to teach environmental issues that are dynamic and complex. A quasi-experimental methodology was used to compare performances of the participants in various dimensions, including systems thinking skills, competence in dynamic environmental problem solving and success in science achievement tests. The same pre-, post- and delayed tests were used with both the comparison and experimental groups in the same public middle school in Istanbul. Classroom activities designed for the comparison group (N = 20) followed the directives of the Science and Technology Curriculum, while the experimental group (N = 22) covered the same subject matter through activities benefiting from systems tools and representations such as behaviour over time graphs, causal loop diagrams, stock-flow structures and hands-on dynamic modelling. After a one-month systems-based instruction, the experimental group demonstrated significantly better systems thinking and dynamic environmental problem solving skills. Achievement in dynamic problem solving was found to be relatively stable over time. However, standard science achievement did not improve at all. This paper focuses on the quantitative analysis of the results, the weaknesses of the curriculum and educational implications. 相似文献
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Sevda Yerdelen-Damar Yezdan Boz Sevgi Aydın-Günbatar 《Journal of Science Education and Technology》2017,26(4):394-405
This study examined the relations of preservice science teachers’ attitudes towards technology use, technology ownership, technology competencies, and experiences to their self-efficacy beliefs about technological pedagogical content knowledge (TPACK). The present study also investigated interrelations among preservice teachers’ attitudes towards technology use, technology ownership, technology competencies, and experiences. The participants of study were 665 elementary preservice science teachers (467 females, 198 males) from 7 colleges in Turkey. The proposed model based on educational technology literature was tested using structural equation modeling. The model testing results revealed that preservice teachers’ technology competencies and experiences mediated the relation of technology ownership to their TPACK self efficacy beliefs. The direct relation of their possession of technology to their TPACK self efficacy beliefs was insignificant while the indirect relation through their technology competencies and experiences was significant. The results also indicated there were significant direct effects of preservice teachers’ attitudes towards technology use, technology competencies, and experiences on their TPACK self efficacy beliefs. 相似文献
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This study aimed to investigate the relationship between School of Physical Education and Sports students’ humour styles and trait anxiety levels. This study sample was composed of 607 randomly selected students attending five different Schools of Physical Education and Sports in Turkey during the spring term of the 2014–2015 academic year. As a result, significant and reverse relationships were found with positive humour styles ‘Self-enhancing humour’ and ‘Affiliative humour’ and positive and meaningful relationships were detected with negative humour styles ‘Aggressive humour’ and ‘Self-defeating humour’. 相似文献
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Humanoid robots equipped with social skills have come to be used increasingly in the field of education across various subfields such as science education, special education, and foreign language education. In order to enhance the use of humanoid robots in educational settings, and to comprehensively evaluate its impact on the transformation of the class, understanding students’ attitudes towards the use of robots for educational purposes plays a critical role. This paper outlines the implementation and validation procedures of an educational robot attitude scale (ERAS) developed to measure the attitudes of secondary school students towards the use of humanoid robots in educational settings. The sample of the study comprised of 232 secondary school students. The development and validation process consisted of exploratory factor analysis and convergent validity. The developed scale consists of 17 items and represents four factors of students’ attitude: engagement, enjoyment, anxiety and intention. These four factors accounted for 66% of the total variance of the scale. Internal consistency coefficient for the whole scale was found .90 according to the reliability analysis. The results of the study suggest that the scale is a valid, reliable, and efficient tool for measuring the dimensions of students’ attitudes towards humanoid robots in educational settings. 相似文献
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The physics questions submitted to an ‘ask a scientist’ website were classified with respect to field of interest in physics,
type of requested information in the question (factual, explanatory, etc.), and motivation for asking the question (applicative
or non--applicative). In addition, differences in the number of females’ and males’ questions in these classifications were
determined. Analysis of 995 physics questions submitted to the website indicated that modern physics questions (30.7%) were
the most frequent while vibrations and wave motion questions (3.3%) were the least frequent. More than half of the questions
(57.8%) were submitted to request factual information. Motivation to ask a question was inferred from the question, and was
generally not related to direct and/or personal application. There were obvious differences in the number of questions asked
by females and males: 84.7% of questions were asked by males while 15.3% were asked by females. However, significant gender
differences were not observed in field of interest in physics, type of information requested in the question, and motivation
for asking the question. 相似文献
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Education and Information Technologies - Education plays a major role in the development of the consciousness of the whole society. Education has been improved by analyzing educational data related... 相似文献
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This paper addresses the issue of the active vibration control of the transverse modes in a flexible elastic systems. The control is implemented by discrete sets of piezoelectric actuators that apply the optimal forces. The performance index is a time-dependent quadratic functional of state variables and their time derivatives, and control forces which are determined by minimizing the objective functional subject to a penalty term on the control functions. A combination of Galerkin and variational approaches are employed to determine the control forces in the time domain explicitly in terms of coupled amplitudes and velocities. The effectiveness of the proposed method is demonstrated by applying it to a physical problem controlled by piezoelectric patch actuators. 相似文献
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Yezdan Boz Sevda Yerdelen-Damar Nurdane Aydemir Murat Aydemir 《Research in Science & Technological Education》2016,34(3):307-324
Background: Investigating factors contributing to chemistry achievement is important since it enables us to make more concrete instructional decisions related to improving students? chemistry achievement.Purpose: This study aimed to investigate how students? perceptions of learning environment, self-efficacy and gender are related to chemistry achievement.Sample: Three hundred fifty six high school students with the age range of 14 and 19 from three different schools in the same district were the participants.Design and methods: A structural equation model was designed and tested. Constructivist learning environment survey, self-efficacy scale were the instruments of the study. Information about students? gender and their chemistry grades belonging to the previous semester were also collected.Results: The model testing showed that chemistry self-efficacy beliefs, students? perceptions of constructivist learning environment (through chemistry-self efficacy) and gender were significantly related to chemistry achievement. Moreover, the findings showed that students? chemistry self-efficacy beliefs mediated the relation of students? learning environment perceptions to their chemistry achievement.Conclusions: The present study has some educational implications for teachers, teacher educators and curriculum developers. First of all, self-efficacy was found to have an effect on students? achievement. Therefore, teachers should consider students? self-efficacy beliefs and devise their instruction accordingly. Another implication of this study is the necessity of considering gender differences in designing teachers? instruction. 相似文献