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Education and Information Technologies - The appearance of tablet technology in the classroom is considered an obvious modernisation milestone. In the last few years school professionals in Poland... 相似文献
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Teaching Scientific Analogies: a proposed model 总被引：1，自引：1，他引：0
Hassan Hussein Zeitoun 《Research in Science & Technological Education》2013,31(2):107-125
The purpose of this paper is to propose a model for teaching scientific analogies. This model is called: ‘The General Model of Analogy Teaching’ (GMAT). A theoretical framework is developed first for this model. The following points are covered in this framework: (1) definition of the analogy, (2) analogical learning, (3) variables related to the analogical learning, (4) evaluating the outcomes of analogical learning, and (5) limitations of using analogies in teaching. The General Model of Analogy Teaching proceeds in the following nine stages: (1) measure some of the students’ characteristics related to analogical learning in general, (2) assess the prior knowledge of the students about the ‘topic’ to be taught, (3) analyse the learning material of the ‘topic’ to be taught, (4) judge the appropriateness of the analogy to be used, (5) determine the characteristics of the analogy to be used, (6) select the strategy of teaching and the medium of presenting the analogy, (7) present the analogy to the students, (8) evaluate the outcomes of using the analogy in teaching, and (9) revise the stages of the model. 相似文献
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Jeylan Wolyie Hussein 《Educational Action Research》2013,21(3):377-393
The research was conducted at Haramaya University with a group of in‐service teacher trainees in the Department of English with the aim of helping the trainees learn about the construction of reading comprehension questions. The data for the study were collected from the trainees’ reading comprehension exercises and their analyses of the cognitive categories of the questions collaboratively designed in the classroom. A reflective diary was kept to record events and to reflect on them. The study resulted in three major findings. The first is that trainees develop better understanding of the pedagogical values of reading comprehension questions when they have the chance to design, evaluate and use hierarchically ordered questions themselves. The second major finding is related to the use of small‐group learning as a strategy to promote collaborative learning. The study found that a community of learning does not happen just by putting trainees together into a group. Thirdly, the study demonstrated that action research should not be conducted with a predetermined problem in mind, but flexibly, to address issues that arise through the action research itself. The experience recounted here suggests that action research is much more than the technical things we do in classrooms; it also helps generate new knowledge. 相似文献
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Ghislaine Gueudet Birgit Pepin Hussein Sabra Luc Trouche 《Journal of Mathematics Teacher Education》2016,19(2-3):187-203
In this study, we investigated design processes in teacher collectives, which have been made possible by new “digital” opportunities: platforms, discussion lists, etc. The object of our study is the French Sésamath teacher association and its design of a grade 10 e-textbook, more precisely the design of the “functions” chapter. We analysed it with two theoretical lenses: the documentational approach and cultural-historical activity theory. We studied the activity system of a community of teachers designing an e-textbook. At macro-level, we observed a change of objects of the activities: from designing a “toolkit” for mathematics teachers; to interactive exercises; and finally to a more “classical e-textbook”. At micro-level, we analysed the development of collective documents by the community, combining resources and schemes. 相似文献
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Barack Hussein Obama 《高中生》2013,(10):16-17
三角函数求值问题历来是高考考查的重点内容．每年的高考题中都会出现三角函数求值题．掌握三角函数求值问题的常考题型．可以帮助我们模清此类问题的考查方向;学会解答三角函数求值问题的解题途径和常规技巧。可以优化我们的解题效果。做到事半功倍; 相似文献
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Arabic is a widely spoken language but few mining tools have been developed to process Arabic text. This paper examines the crime domain in the Arabic language (unstructured text) using text mining techniques. The development and application of a Crime Profiling System (CPS) is presented. The system is able to extract meaningful information, in this case the type of crime, location and nationality, from Arabic language crime news reports. The system has two unique attributes; firstly, information extraction that depends on local grammar, and secondly, dictionaries that can be automatically generated. It is shown that the CPS improves the quality of the data through reduction where only meaningful information is retained. Moreover, the Self Organising Map (SOM) approach is adopted in order to perform the clustering of the crime reports, based on crime type. This clustering technique is improved because only refined data containing meaningful keywords extracted through the information extraction process are inputted into it, i.e. the data are cleansed by removing noise. The proposed system is validated through experiments using a corpus collated from different sources; it was not used during system development. Precision, recall and F-measure are used to evaluate the performance of the proposed information extraction approach. Also, comparisons are conducted with other systems. In order to evaluate the clustering performance, three parameters are used: data size, loading time and quantization error. 相似文献
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Anna Pick Kiong LING Kinn Poay TAN Sobri HUSSEIN 《Journal of Zhejiang University. Science. B》2013,14(7):621-631
Objective: Labisia pumila var. alata, commonly known as ’Kacip Fatimah’ or ’Selusuh Fatimah’ in Southeast Asia, is traditionally used by members of the Malay community because of its post-partum medicinal properties. Its various pharmaceutical applications cause an excessive harvesting and lead to serious shortage in natural habitat. Thus, this in vitro propagation study investigated the effects of different plant growth regulators (PGRs) on in vitro leaf and stem explants of L. pumila. Methods: The capabilities of callus, shoot, and root formation were evaluated by culturing both explants on Murashige and Skoog (MS) medium supplemented with various PGRs at the concentrations of 0, 1, 3, 5, and 7 mg/L. Results: Medium supplemented with 3 mg/L indole-3-butyric acid (IBA) showed the optimal callogenesis from both leaf and stem explants with (72.34±19.55)% and (70.40±14.14)% efficacy, respectively. IBA was also found to be the most efficient PGR for root induction. A total of (50.00±7.07)% and (77.78±16.47)% of root formation were obtained from the in vitro stem and leaf explants after being cultured for (26.5±5.0) and (30.0±8.5) d in the medium supplemented with 1 and 3 mg/L of IBA, respectively. Shoot formation was only observed in stem explant, with the maximum percentage of formation ((100.00±0.00)%) that was obtained in 1 mg/L zeatin after (11.0±2.8) d of culture. Conclusions: Callus, roots, and shoots can be induced from in vitro leaf and stem explants of L. pumila through the manipulation of types and concentrations of PGRs. 相似文献
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