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21.
In mathematics instruction, can a teacher implement surface features of instruction that foster self-regulated learning as well as achieve quality at the deeper level of instruction, that is, focus on higher-order thinking, problem-solving, and mathematical modeling? An educational reform effort in Switzerland, which is based on constructivist and sociocultural theories of mathematics learning, targets both these dimensions: self-regulated learning and conceptual understanding. We examined the realization of the two dimensions in classroom instruction in a video-based study of 79 eighth-grade math classes using three kinds of data: videotapes of mathematics lessons, student and teacher questionnaires, and achievement tests. As to the surface level of instruction, teachers reported how frequently they provided opportunities for self-regulated learning. With regard to the deeper level of instruction, teachers reported how frequently they provided opportunities for independent problem solving. In addition, we examined the extent to which teachers’ pedagogical beliefs reflected a constructivist orientation. The results showed that teachers implemented the two dimensions relatively independently of one another. Teachers’ constructivist-oriented beliefs influenced only opportunities provided for independent problem solving and did not affect opportunities for self-regulated learning. Opportunities for self-regulated learning had a positive effect on students’ learning experience. Professional development should encourage teachers to take greater account of both surface-level and deeper-level (quality) features of instruction.  相似文献   
22.
Mobile Agents for Distributed and Heterogeneous Information Retrieval   总被引:1,自引:0,他引:1  
The heterogeneous, distributed and voluminous nature of many government and corporate data sources impose severe constraints on meeting the diverse requirements of users who analyze the data. Additionally, communication bandwidth limitations, time constraints, and multiple data formats impose further restrictions on users of these distributed data sources. In this paper, we present an Agent-based Complex QUerying and Information Retrieval Engine (ACQUIRE) for large, heterogeneous, and distributed data sources. ACQUIRE acts as a softbot or interface agent by presenting users with a view of a single, unified, homogenous data source, against which users can pose high-level declarative queries. ACQUIRE translates each such user query into a set of sub-queries by employing a combination of planning and traditional database query optimization techniques. ACQUIRE then spawns a set of mobile agents corresponding to these sub-queries, which in turn retrieve the data from various distributed data sources by dynamically optimizing the retrieval strategy as it is carried out. These mobile agents carry with them data-processing code that can be executed at the remote site, thus reducing the size of data returned by the agent. When all mobile agents have returned, ACQUIRE filters and merges the retrieved data and presents the results to the user. While the system is still very much a work in progress, current validation experiments on simulated NASA Distributed Active Archive Centers (DAACs) have demonstrated that complex queries can be effectively decomposed and retrieved by this approach.  相似文献   
23.
This case is written for instructors of classes focused on strategic management, organisational behaviour, human resource management, and/or an officiating course. The case highlights the numerous administrative processes a new employee in a sport organisation would face. Although the case is fictional it is based on the authors’ personal and professional experiences in athletics administration and officiating, and further draws upon the authors’ research in the area of officiating. Consequently, this case study was constructed based on first-hand observation, interviews and conversation with numerous officials and administrators, and through the examination of documents frequently used to manage officials. As a result, the case provides an opportunity for students to critically evaluate and address: (1) a sport organisation's policies and procedures; (2) issues related to human resource management within a sport setting; (3) the managerial response after an organisational failure.  相似文献   
24.
25.
This study examined whether teachers prioritize the use of technology. More specifically, this paper focused on how Turkish teachers think about the importance of technology and technological tools for their daily routines. The research design employed both qualitative and quantitative methods. The data were collected through document analyses, interviews, and a survey. The results showed that the following factors lead teachers to prioritize the use of technology in the classroom: (a) globalization, (b) society’s needs, (c) technological literacy, (d) student learning, and (e) practicability.  相似文献   
26.
Abstract

This article details the experiences of four teacher education faculty members as we navigated the consequential implementation of a state-mandated high stakes teacher performance assessment in our educator preparation program. By shifting our perspective from simply complying with an assessment mandate to considering how we can leverage implementation of high stakes performance assessment as a vehicle for program inquiry, we were able to gain significant insight into our practice.  相似文献   
27.
ABSTRACT— The central and peripheral visual fields are structurally segregated in the brain and are differentiated by their anatomical and functional characteristics. While the central field appears well suited for tasks such as visual search, the periphery is optimized for rapid processing over broad regions. People vary in their abilities to make use of information in the center versus the periphery, and we propose that this bias leads to a trade-off between abilities for sequential search versus contemporaneous comparisons. The parameter of periphery-to-center ratio (PCR) describes the degree of peripheral bias, which evidence suggests is high in many people with dyslexia. That is, many dyslexics favor the peripheral visual field over the center, which results in not only search deficits but also (more surprisingly) talents for visual comparison. The PCR framework offers a coherent explanation for these seemingly contradictory observations of both deficit and talent in visual processing. The framework has potential implications for instructional support in visually intensive domains such as science and mathematics.  相似文献   
28.
The expectations, attributions, and reactions toward children and youth who have contracted HIV/AIDS warrant close attention from parents, teachers, related service personnel, and others who will interact with these students in the schools. Those who are misinformed or unaware of their beliefs may inadvertently discriminate against children and youth with the disease. This study examined factors that influence judgments about children and youth with HIV/AIDS in a sample of teacher education students. Course of infection of HIV accounted for significant differences in the participants' judgments about responsibility and blame for contracting the disease and also fearfulness and attitudes reflecting isolation for these youth. Educational professionals should be aware of the many negative attributions placed on adolescents who are diagnosed as HIV+ and be prepared to act as facilitators when designing appropriate interventions to assist these students. © 2004 Wiley Periodicals, Inc. Psychol Schs 41: 211–219, 2004.  相似文献   
29.
The use of IQ scores and discrepancy formulas for identifying specific learning disabilities (SLD) has been widely discredited by prominent researchers for more than a decade. Nevertheless, the overwhelming majority of state policies still specify the use of discrepancy formulas, including the simple difference method, which is psychometrically inferior to regression-based methods. This study compares the use of a minimum IQ cutoff score and a simple difference method versus a regression-based method for identifying SLD in a sample of African American and European American full-time college students (N = 117). Replicating the findings from previous studies using typically achieving children, typically achieving adults, and school-age children with SLD, this study adds to the chorus of voices criticizing the use of outdated assessment practices that can have deleterious effects for individuals with SLD. The implications for legislative policy are discussed in the context of the historical overrepresentation of African Americans in all special education categories except SLD and the increased access to higher education that students with SLD have gained during the past decade.  相似文献   
30.
Most Australian universities have among their goals to increase the number of Aboriginal and Torres Strait Islander students at their institutions. In the Australian higher education context, Aboriginal and Torres Strait Islander students are seriously under-represented, particularly in business education compared to other disciplines. An understanding of why a larger proportion of Aboriginal and Torres Strait Islander students do not choose to study a discipline that provides promising employment opportunities, is fundamental to improving the status quo. This paper reviews the literature to identify key barriers to Aboriginal and Torres Strait Islander students’ participation and engagement in business education. Apart from multiple general barriers to participation in higher education, factors specific to business as a profession and as an academic discipline are also considered. The paper then discusses a number of strategies Australian educational institutions could pursue when seeking to increase participation and engagement of Aboriginal and Torres Strait Islander students in business. Drawing on the review, the paper concludes with recommendations for higher education institutional policy to further improve Aboriginal and Torres Strait Islander student participation and engagement in business studies.  相似文献   
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