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Umran Betul Cebesoy Ceren Oztekin 《International Journal of Science and Mathematics Education》2018,16(7):1247-1268
Teachers have a crucial role to play in raising future generations of citizens who are aware of issues in genetics literacy such as gene therapy, cloning, and stem cell research. Teachers’ teaching practices are influenced by their knowledge in genetics literacy and their attitudes towards different issues. Accordingly, this study explored the relationships among middle school science teachers’ background characteristics (gender, teaching experience, self-perceived interest in and self-perceived knowledge of genetics), their genetics literacy levels, their attitudes towards various issues in genetics literacy, and their perceptions of teaching issues in genetics literacy. Data were collected from 435 Turkish middle school science teachers by completing the Genetics Literacy Assessment Inventory, the scale for attitudes towards issues in genetics literacy and perceptions of teaching issues in genetics literacy. The results of canonical correlation analysis suggested that being female, having a high level of interest in genetics, and perceiving oneself as knowledgeable in genetics were associated with higher levels of knowledge in genetics literacy and holding favorable general attitudes. These teachers believed in the necessity of introducing genetics literacy and held higher self-efficacy teaching beliefs regarding the teaching of issues in genetics literacy in their classes. However, they tended to emphasize more impeding factors as well as hold unfavorable attitudes towards gene therapy and gene therapy applications, implying that their attitudes were context dependent. 相似文献
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Purpose: To determine the safety and feasibility of early physical therapy in the intensive care unit in a patient with biventricular assist device. Methods: Physical therapy started on the first postoperative day and continued till discharge including airway clearance, lower/upper extremity exercises, and mobilization. Heart rate (HR), respiratory rate (RR), systolic/diastolic/mean arterial pressures, peripheral oxygen saturation, and double product were recorded before treatment, after treatment, and 5 minutes after treatment. Results: In total, 15 sessions of physical therapy were implemented for a 41-year-old male patient during 21 days following implantation of a biventricular assist device. Normal physiological responses were seen in response to treatment. Heart rate increased significantly after treatment in comparison to pretreatment values (p = 0.02) and decreased significantly after 5 minutes (p = 0.03) and approached pretreatment values. Respiratory rate increased nonsignificantly after treatment and decreased significantly after 5 minutes (p = 0.001) and approached pretreatment values. Conclusion: Physical therapy in the intensive care unit in a patient with biventricular assist device resulted in significant increases within HR and RR in physiological limits. Ongoing monitoring of vital signs is recommended in order to observe physiological responses to early physical therapeutic interventions in the intensive care unit.Key Words: biventricular assist device, physical therapy, intensive care unit 相似文献
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Eneida Oto Shiroma 《教育政策杂志》2014,29(3):323-348
This paper focuses on the role of networks in the policy-making process in education and discusses the potential of network analysis as an analytical tool for education policy research. Drawing on publically available data from personal or institutional websites, this paper reports the findings from research carried out between 2005 and 2011. Through document analysis, we investigated the composition, activities and strategies adopted by an important policy network in Latin America and traced its developments in Brazil. We adopted the categories – texts, technical artefacts, human beings and money – proposed by Callon to identify the links between the main actors and organizations in that network and drew our conceptual framework from the work of Gramsci in order to analyse the struggle for hegemony and the role of business interests in education policy-making. The findings show that the expansion of networks does not replace the State in education, but rather the State constitutes a strategic node in these networks. 相似文献
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Savas Pamuk Semra Sungur Ceren Oztekin 《International Journal of Science and Mathematics Education》2017,15(8):1423-1440
This study adopted a cross-sectional and correlational research design in an attempt to add our understanding of student- and teacher-level factors that help explain variability in students’ science achievement to the existing literature. More specifically, the present article examined students’ science achievement in relation to their constructivist learning environment perceptions, epistemological beliefs, and self-regulation as well as their science teachers’ characteristics. Data were gathered from both 137 science teachers and their 3281 seventh grade students via administering self-report questionnaires. Hierarchical linear modeling (HLM) analysis was conducted to analyze the two-level data (student level and teacher level). Students’ learning environment perceptions, epistemological beliefs, achievement goals, and self-regulation constituted student-level data while teachers’ self-efficacy, achievement goals, and epistemological beliefs constituted teacher-level data. The findings indicated that students’ constructivist learning environment perceptions were significant predictors of their science achievement. Additionally, students with sophisticated epistemological beliefs appeared to be more successful in science. Also, performance avoidance goals were negatively related to science achievement. Among teacher-level variables, teachers’ self-efficacy and sophisticated epistemological beliefs were found to be positively linked to students’ science achievement. 相似文献
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Cristina Frade Oto Borges 《International Journal of Science and Mathematics Education》2006,4(2):293-317
This paper reports on study that investigated the tacit-explicit dimension of the learning of mathematics. The study was carried out in a secondary school and consisted of an episode analysis related to a class discussion about the difference between plane figures and spatial figures. The data analysis was based on integration between some aspects of Polanyi’s theory on tacit knowledge and Ernest’s model of mathematical knowledge, with reference to its mainly explicit and mainly tacit components. This integration has involved not only the types of knowledge – mainly explicit or mainly tacit – the students used in a psychological way to perform a mathematical task involving conversation, but also and particularly how much the projection of those types of knowledge on the task were manifest tacitly or formalized by the students. Among the results of the research, a strong finding was that the lack of correspondence between the students’ utterances and their original understandings is directly related to the manner in which the tacit co-operates with the explicit in the process of articulation.This paper is a development of three short papers presented at ICME-10, Copenhagen, Denmark, 4–11 July 2004, and PME-28, Bergen, Norway, 14–18 July 2004. 相似文献
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G. Tuncer Teksoz J.W. Boone O. Yilmaz Tuzun C. Oztekin 《Environmental Education Research》2014,20(2):202-227
The purpose of this study was to make use of proposed definitions of environmental literacy to (1) guide the application of Rasch analysis and (2) utilize the developed instrumentation to further inform the work of environmental educators. A total of 2311 preservice teachers attending Faculty of Education departments of four public universities located in the capital city of Turkey provided data for this study. The instrument used included a knowledge scale, an attitude scale, an attitude towards environmental responsibility scale and a concern scale. Rasch analysis revealed which those items which address the environmental knowledge widely broadcasted by mass media also were answered correctly by most participants. Generally, instrument items that addressed the understanding of the interrelated nature of environmental knowledge were answered incorrectly by participants. Analysis of attitude and attitude towards environmental responsibility scales indicated that the preservice teachers exhibited the most support for plant and animal rights, environmental protection laws and ecological balance. Results of the concern scale suggested that the preservice teachers were most concerned with regard to issues of poor drinking-water quality. Gender analysis revealed different orientations among females and males in terms of knowledge, attitudes, attitude towards environmental responsibility and concern scales. 相似文献
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Ayse Yenilmez Turkoglu Ceren Oztekin 《Research in Science & Technological Education》2016,34(2):219-236
Background: Scientific models have important roles in science and science education. For scientists, they provide a means for generating new knowledge or function as an accessible summary of scientific studies. In science education, on the other hand, they are accessible representations of abstract concepts, and are also organizational frameworks to teach and learn inaccessible facts. As being indispensable parts of learning and doing science, use of scientific models in science classes should be reinforced. At this point, uncovering pre-service science teachers’ (PSTs) understandings of scientific models are of great importance since they will design and conduct teaching situations for their students. Purpose: The study aimed to provide an answer to the research question: What understandings do PSTs possess about scientific models? Sample: The sample of the study consisted of 14 PSTs enrolled in an Elementary Science Education program in a public university in Ankara, Turkey. Design and methods: Data were collected by using an open-item instrument and semi-structured interviews, and were analyzed by using qualitative data analysis methods. Results: Findings showed that PSTs held fragmented views of models by having informed views in some aspects while having naïve views on others. That is, although they displayed a constructivist orientation by acknowledging the presence of multiple models for the same phenomenon depending on scientists’ perspectives or creativity involved in the production of scientific knowledge, PSTs also expressed logical positivist views by believing that models should be close to the real phenomena that they represent. Findings further revealed that PSTs generally conceptualized models’ materialistic uses, yet they did not think much about their theoretical and conceptual uses. It was observed that roles like reifying and visualizing were overestimated and models were dominantly characterized as three-dimensional representations. Conclusions: It is clear that PSTs, having difficulties in grasping the concept of models, would possibly have problems in planning their lessons effectively and would not develop accurate concepts in their students. These findings apparently support the need for appropriate pedagogic training of PSTs to scientifically reflect on and professionally make use of models in science classes. 相似文献
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