排序方式： 共有126条查询结果，搜索用时 234 毫秒
81.
This article addresses the importance of obtaining a sample of an adequate size for the purpose of testing hypotheses. The
logic underlying the requirement for a minimum sample size for hypothesis testing is discussed, as well as the criteria for
determining it. Implications for researchers working with convenient samples of a fixed size are also considered, and suggestions
are given about the steps that should be taken when they are not able to obtain a large enough sample. Finally, the implications
of not having an adequate sample size for hypothesis testing are discussed to highlight the importance of determining sample
size prior to conducting one’s study. 相似文献
82.
Ninger Zhou Aman Yadav 《Educational technology research and development : ETR & D》2017,65(6):1523-1545
The use of multimedia story applications on touch-interactive mobile devices has become prevalent in early education settings. However, despite the promise of multimedia story applications for early learning outcomes, there has been a dearth of research on the educational benefits of such tools, and whether their effects can be strengthened with the integration of questioning strategies. This study investigated the effects of multimedia story reading and questioning on children’s literacy skills, including vocabulary learning, story comprehension and reading engagement. Using a 2 (multimedia vs. paper) × 2 (question vs. no question) design, a total of 72 participants were randomly assigned to one of four conditions: multimedia story reading, multimedia story reading with questioning, paper story reading, and paper story with questioning. To identify the effects of Media and Questioning on children’s vocabulary learning, story comprehension, and reading engagement, we conducted a series of two-way ANCOVAs, controlling for different covariates as appropriate. The results showed significant interaction of media and questioning on target vocabulary and significant main effect of media for engagement, but the results showed no significant main effects of either media or questioning for comprehension. This study demonstrated research tools to examine children’s learning and engagement with interactive mobile devices, and suggested potential benefits of multimedia story reading and questioning for learning. We discuss implications of these findings for the design and use of multimedia storybooks. 相似文献
83.
Aman Yadav Sarah Gretter Susanne Hambrusch Phil Sands 《Computer Science Education》2016,26(4):235-254
The increased push for teaching computer science (CS) in schools in the United States requires training a large number of new K-12 teachers. The current efforts to increase the number of CS teachers have predominantly focused on training teachers from other content areas. In order to support these beginning CS teachers, we need to better understand their experiences and challenges encountered in the classroom. This study investigated U.S. CS teachers’ perspectives on the demands of teaching computer science and support needed to ensure quality teaching. Results suggested that teachers face a number of challenges, including isolation, lack of adequate computer science background, and limited professional development resources. 相似文献
84.
Lokman Mohd Tahir Muhamad Berhanddin Musah Abdul Halim Abdullah Aede Hatib Musta’amal Mohd Hazim Asran Abdullah 《Educational studies》2016,42(5):465-492
This study determines the preferable leadership practised by colleges’ directors, institutional factors and challenges encountered in knowledge sharing in Malaysian technical higher learning institutions (HLIs). Using a pragmatic mixed-method strand, we obtained 212 teachers and instructors’ viewpoints on knowledge sharing factors and barriers. The study also interviewed four teachers in exploring college directors’ leadership practices and issues faced while sharing their knowledge and experiences with their colleagues. The findings revealed that technical college teachers favoured enabling others to act as a preferable leadership practice that empirically supports their knowledge sharing practices. Thus, reward system and culture were antecedents and significant predictors for teachers’ knowledge sharing practices in technical HLIs compared with their colleges directors’ transformational leadership practices. Teachers also highlighted that their directors provide affirmative responses concerning the knowledge sharing activities; thus, practising their roles as a knowledge sharing catalysts. However, lack of support from the management, micro-politics and teachers’ own negative perceptions were identified as challenges and constraints teachers encountered while sharing their knowledge with their peers. The findings put forward some suggestions for improvement on technical college’s knowledge sharing practices. 相似文献
85.
Nor Elleeiana Mohd Syah Nur Azah Hamzaid Belinda Pingguan Murphy Einly Lim 《Interactive Learning Environments》2016,24(7):1477-1496
This study describes the development of a basic computer-based play pedagogy intervention using a dyscalculia-remedy-oriented approach such as repetition and number orientation manipulation, and the investigation of its effect on children displaying dyscalculia characteristics. This computer play was evaluated in a group of 50 seven-year-old Malaysian children, who were low achievers in mathematics subject and were divided into control and intervention group. The intervention group engaged with the newly developed computer play for an hour per day for five consecutive days, while the control group attended normal classroom learning for the same time period. Overall post-test scores indicated that children from the intervention group performed significantly better than the control group after the five-day intervention period by 57.9%. Number disorientation and arithmetic operation confusion, which are common amongst the children displaying dyscalculia characteristics, were also significantly reduced after the intervention. This implies that the children benefitted from the computer play. 相似文献
86.
Nada Almasri Luay Tahat Sawsan Skaf Aman Al Masri 《Technology, Pedagogy and Education》2019,28(1):91-113
The well-known Syrian crisis has made it very challenging for thousands of Syrian children to have access to education. In this article, the authors propose a framework for designing a digital education platform to allow children inside Syria as well as in the refugee camps in bordering countries to have access to education. The authors start by looking at the efforts performed in the field of education in conflict-affected regions, and they extract from them the lessons learned and recommendations. They provide four main characteristics of war impacting children’s education: (1) insecurity, (2) instability, (3) lack of resources, and (4) lack of adult supervision. They then use these four characteristics, along with the extracted recommendations, as the grounds for drafting three design considerations for the implementation of a digital education platform. The three design considerations are: supervised self-directed learning method, context-aware education and children-oriented design. Finally, the authors use these design considerations to provide design recommendations for the four main elements of a digital education platform: hardware, software, curriculum and supporting services. They conclude by discussing the validity of the digital platform, its implementation feasibility, and challenges facing the implementation. 相似文献
87.
88.
Anand K. Pyati Basavaraj B. Devaranavadagi Sanjeev L. Sajjannar Shashikant V. Nikam Mohd. Shannawaz Satish Patil 《Indian journal of clinical biochemistry : IJCB》2016,31(4):439-445
The study aimed to investigate whether heart-type fatty acid binding protein (H-FABP) measurement provides additional diagnostic value to that of conventional cardiac markers in acute myocardial infarction (AMI) within first 6 h after the onset of symptoms. The study included 120 subjects: 60 AMI cases and 60 age and sex matched controls. The cases and controls were further divided into 2 subgroups depending on the time since onset of chest pain as (1) subjects within 3 h and (2) between 3 and 6 h of onset of chest pain. In all the cases and controls, serum H-FABP concentration was measured by Immunoturbidimetric method, serum Troponin I and myoglobin concentrations by Chemiluminescence immunoassay and serum CK-MB concentration by Immuno-inhibition method. The sensitivity, specificity, positive and negative predictive values of H-FABP were significantly greater than CK-MB and myoglobin but were lesser than Troponin I in patients with suspected AMI in both within 3 h and 3–6 h groups. Receiver operating characteristic curves demonstrated greatest diagnostic ability for Troponin I (AUC = 0.99, p < 0.001) followed by H-FABP (AUC = 0.906, p < 0.001) within 3 h and 3–6 h after the onset of chest pain. In conclusion, the diagnostic value of H-FABP is greater than CK-MB and myoglobin but slightly lesser than troponin I for the early diagnosis of AMI within first 6 h of chest pain. H-FABP can be used as an additional diagnostic tool for the early diagnosis of AMI along with troponin I. 相似文献
89.
90.
Mohd Sahandri Gani B. Hamzah Hapidah Bt. Mohamed Saifuddin Kumar B. Abdullah Roselan B. Baki 《美中教育评论》2008,5(10):1-16
The main aim of the study was to evaluate trainee teachers working commitment in their teaching practicum. There were seven component teaching practices and eleven demographic factors. The instrument of the study was extracted from various sources to suit the research design based on Units, Treatments, Observing, and Surveying （UTOS） model modification. The reliability index obtained for both research instruments were reasonably good ranging from 0.7030 to 0.9053. A total of 276 trainee teachers who were doing their practical teaching in one of the state in Malaysia （Kelantan）. Stratified random sampling was used. They made their self-assessment by using the working commitment instrument. At the same time, their teaching processes were guided through conferences, observations and finally evaluations to get their comparative scores of teaching performance. The data were analyzed by using statistical multiple regression at significant ofp 〈 0.05. As a result, a linear equation of trainee teachers＇ commitment comprises contribution of work load, work satisfaction, study opportunities, teachers＇ prospect, marital status, teaching practices, planning and preparation teaching procedure, and religious studies. Furthermore the findings of this study led to some suggestions for future teachers development and become more efficient and adaptive. 相似文献