Background: One of the most important goals of science education is to enable students to understand the nature of science (NOS). However, generally regular science teaching in classrooms does not help students improve informed NOS views.
Purpose: This study investigated the influence of an explicit reflective conceptual change approach compared with an explicit reflective inquiry-oriented approach on seventh graders’ understanding of NOS.
Sample: The research was conducted with seventh grade students. A total of 44 students participated in the study.
Design and method: The study was an interpretive study because this study focused on the meanings that students attach to target aspects of NOS. Participants were divided into two groups, each consisting of 22 students. One of the groups learned NOS with an explicit reflective conceptual change approach. The requirements of conceptual change were provided through the use of conceptual change texts and concept cartoons. The other group learned NOS with an explicit reflective inquiry-oriented approach. The data were collected through open-ended questionnaires and semi-structured interviews. These instruments were employed in a pre-test, a post-test and a delayed test. Students’ views of the aspects of NOS were categorized as naive, transitional and informed.
Results: The result of this study indicated that before receiving instruction, most of the participants had transitional views of the tentative, empirical and imaginative and creative aspects of the NOS, and they had naive understandings of the distinction between observation and inference. The instruction in the experimental group led to a 60% – a 25% increase in the number of students who possessed an informed understanding of the tentative, empirical, creative and observation and inference aspect of the NOS. The instruction in the control group led to a 30% – a 15% increase in the informed NOS views.
Conclusion: The explicit reflective conceptual change approach is more effective than the explicit reflective inquiry-oriented approach in improving participants’ NOS conceptions. Another conclusion of this study is that if NOS is taught within the explicit reflective conceptual change approach, learners can retain learned views long after instruction. 相似文献
A previous study has justified the idea that a politically liberal conception of formal education can be applied in a developing democracy if such a society has reached a narrow overlapping consensus on its education system or modifies its education system from a minimally coercive perspective. This study further considers the fundamental question of how to determine such an educational account’s curriculum elements. In this sense, this study aims to provide a perspective on determining some core curriculum elements of a politically liberal conception of formal education, while focusing its attention to developing democracies. 相似文献
In this quantitative study, urban adolescents' sociodemographic and personal characteristics and their political views about problems at a variety of levels were examined. The main purpose of this research was to contribute to adolescent and youth sociology in Turkey by exploring the relationships between urban adolescents' demographic information and their knowledge and attitudes about world, country, city, and neighborhood problems. After a pilot study, the main study was carried out with 248 students from 4 primary schools in Ankara. A brief questionnaire was administered to selected schools. The results of statistical analyses show that students who live in different neighborhoods are not homogeneous within their socioeconomical background. The mothers' education and working status are the most important variables and they have impact on urban adolescent knowledge about Ankara as a city as well as neighborhood level problems. 相似文献
This research aims to unearth the educational challenges experienced by teachers and communities in rural Turkey. The research employs Nancy Fraser’s three dimensional justice approach – distribution, recognition and participation – to frame these challenges and to argue that rural challenges go beyond economic rationalities and concerns of infrastructure and resources. The study draws its data from 29 in-depth interviews with 20 teachers working in 16 different villages; 9 interviews with community members; and 2 focus group interviews, 1 with rural dwelling women and the other with rural dwelling men. The findings point out four significant difficulties that impede community and educational development: scarcity of resources; insufficient understanding of social, cultural and economic contexts that constrain educational attempts; lack of collaboration between teacher and communities; and irrelevant education. The study concludes by scrutinising how these difficulties interact with one another and result in marginalisation or casting out of rural lives. 相似文献
This study aims to evaluate the effectiveness of in‐service courses conducted by the Ministry of National Education in order to inform teachers about the changes introduced by the new primary and secondary school curricula. The study also aims to reveal whether these changes have entered the classrooms based on the teachers’ views of the INSET courses they attended. For this purpose, semi‐structured interviews were conducted with both primary and secondary school teachers during the 2007–2008 academic year. Data were analysed based on the effective INSET criteria identified from the literature. According to the findings, the INSET courses were found to be ineffective, mainly in terms of the quality of the instructors, teaching methods employed, duration of the courses and support after training. Suggestions to conduct effective INSET courses, especially when change is afoot, are included at the end of this paper. 相似文献
The purpose of this study was to model the relationship between pre-service chemistry teachers’ epistemological beliefs and their preference to use constructivist-learning environment in their future class. The sample was 125 pre-service chemistry teachers from five universities in Turkey. Two instruments were used in this study. One of the instruments was constructivist-learning environment scale developed by Taylor, Fraser and Fisher. The other instrument was Epistemological Questionnaire (EQ) developed by Schommer. In order to analyse data, Structural Equation Modelling was conducted by using LISREL 8.7. The results provided evidence for the good fit of the hypothesised model. Pre-service chemistry teachers’ epistemological belief scores were found to be correlated to their constructivist-learning environment scale scores with the value of .35. This study revealed that pre-service chemistry teachers with sophisticated epistemological beliefs favoured constructivist-learning environment in their future class. 相似文献
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
Since Proportional?+?Integral?+?Derivative (PID) controller is still the workhorse in taking over the workload of process control systems, this article introduces a new design methodology toward improving the performance of such controller. After a PI control law with windup protection is given, it is combined with a derivative path employing a first-order low pass filter in an innovative way to develop a performant controller called PI?+?DF controller. In attempting to attain a high level of control performance, gains of this controller including proportional, integral, derivative and filter gains are tuned choosing the recently introduced Stochastic Fractal Search (SFS) algorithm owing to its superiority to many state-of-the-art algorithms considering convergence, accuracy and robustness. To evaluate the efficacy of SFS, Particle Swarm Optimization (PSO) is also applied to the case study. Furthermore, the presented SFS optimized PI?+?DF controller is compared to a recently reported control scheme through simulation and experimental tests on an identical DC servo system. After providing the stability proof, SFS tuned PI?+?DF controller is found to be the pioneer in exhibiting the most accurate speed response profile under complicated scenarios, which is followed by PSO tuned PI?+?DF controller and the existing control approach, respectively. 相似文献
