技术整合:对课程与教学方案开发的思考

作者系本刊编辑去年在北京大学一国际会议上相识的美国学者,其对开放与远程教育有一定研究。应编辑部之约,作者结合美国远程教育的最新动态完成此稿并如期惠赐本刊,以飨中国读者。     

Longitudinal effects of different aspects of morphological awareness skills on early spelling development

Reading and Writing - The purpose of this 3-year longitudinal study was to examine the role of three morphological awareness (MA) aspects (inflectional, derivational, and lexical compounding) in...     

Relationship between exercise heart rate and music tempo preference

The present study examined the predicted positive and linear relationship (Iwanaga, 1995a, 1995b) between exercise heart rate and music tempo preference. Initially, 128 undergraduate students (M age = 20.0 years, SD = 0.9) were surveyed to establish their three favorite music artists. A separate experimental group of 29 undergraduates (M age = 20.3 years, SD = 1.2) selected the music of a single artist from the three highest-rated artists from the earlier survey. They reported their preference for slow, medium, and fast tempo selections from each artist for three treadmill walking conditions at 40%, 60%, and 75% maximal heart rate reserve. A mixed-model 3 x 3 x 2 (Exercise Intensity x Music Tempo x Gender) analysis of variance was used to analyze the data. Results indicated there was no three-way interaction for music preference. There was, however, a significant (p < .05) two-way interaction for Exercise Intensity x Music Tempo (partial eta2 = .09) and a significant (p < .05) main effect for music tempo, with large differences evident between preference for medium versus slow tempo and fast versus slow tempo music at all exercise intensities (partial eta2 = .78). Participants reported a preference for both medium and fast tempo music at low and moderate exercise intensities and for fast tempo music at high intensity. Only partial support was found for the expected linear relationship between exercise intensity and music tempo preference.     

Multi-technique comparative analysis of machine learning algorithms for improving the prediction of teams’ performance

Education and Information Technologies - Working in groups is an important collaboration activity in the educational context, where a variety of factors can influence the prediction of the...     

Burnout,Job Satisfaction and Instructional Assignment‐related Sources of Stress in Greek Special Education Teachers

In the literature concerning Greek special education teachers, there is little evidence regarding the perceived levels of burnout, job satisfaction, and job‐related stress factors. The present study focused on the above issues. A sample of 127 Greek special education teachers at the primary school level was tested with the Maslach Burnout Inventory, the Employee Satisfaction Inventory, and the Inventory of Job‐related Stress Factors (an instrument created for this study). Results indicated that Greek special education teachers reported average to low levels of burnout. They reported moderately high levels of satisfaction with their job, the principal, and the school organisation as a whole; they also reported average satisfaction with work conditions and low satisfaction with prospects of promotion and pay. Four factors were identified on the job‐related stress factors: teaching in a multi‐category classroom, programme organisation and implementation, assessment of students, and collaborations with other special education experts and parents. The special education teachers perceived none of these issues as particularly overwhelming. Moreover, few significant effects of age, gender, and family status were identified. The above results are consistent with other studies that have focused on Greek regular education teachers, which have indicated that, in general, this group do not experience high levels of occupational stress.     

A response to Padeliadu: can student attitudes exist outside the school climate?

The present study explored typically developing children’s understanding of, and attitudes towards, the inclusion of children with physical disabilities (PD) in mainstream settings. The 60 children who participated in the study attended sixth grade in two mainstream primary schools (30 in contact with a child with PD and 30 without such contact). They filled in a questionnaire to measure understanding of disabilities and one to explore attitudes towards inclusion. Analyses revealed that children in contact with a child with PD had a better understanding of the emotional and social problems associated with the presence of PD than the comparison group. Moreover, children in contact with a child with PD expressed more positive attitudes towards the inclusion of children with PD in relation to children without such contact. Results are discussed in terms of the importance of contact in the formation of more positive attitudes towards the inclusion of children with PD.     

Affirmative action strategies and professional schools: case illustrations of examplary programs

Increases of women and minority students at professional schools have been reported but disadvantaged populations still suffer underrepresentation. The literature indicates that effective affirmative action may be realized through early identification programs and pre-professional contact during recruitment; role modeling, and mentoring used from early identification through professional licensure; resocialization techniques for both faculty and students used after matriculation; and academic, social, and psychological support services used during the program that aid retention. A survey of law, medical, dental, and veterinary schools revealed various affirmative action strategies used for the recruitment, admission, and retention of women and minorities. Seven case illustrations of affirmative action programs are detailed. These cases demonstrate that an eclectic grouping of strategies is less effective than a concise, directed program of strategies complementary to the professional school, its faculty, their geographic location, their targeted clientele, and their specific goals for cultural diversity.     

Music in the exercise domain: a review and synthesis (Part II)

Since a 1997 review by Karageorghis and Terry, which highlighted the state of knowledge and methodological weaknesses, the number of studies investigating musical reactivity in relation to exercise has swelled considerably. In this two-part review paper, the development of conceptual approaches and mechanisms underlying the effects of music are explicated (Part I), followed by a critical review and synthesis of empirical work (spread over Parts I and II). Pre-task music has been shown to optimise arousal, facilitate task-relevant imagery and improve performance in simple motoric tasks. During repetitive, endurance-type activities, self-selected, motivational and stimulative music has been shown to enhance affect, reduce ratings of perceived exertion, improve energy efficiency and lead to increased work output. There is evidence to suggest that carefully selected music can promote ergogenic and psychological benefits during high-intensity exercise, although it appears to be ineffective in reducing perceptions of exertion beyond the anaerobic threshold. The effects of music appear to be at their most potent when it is used to accompany self-paced exercise or in externally valid conditions. When selected according to its motivational qualities, the positive impact of music on both psychological state and performance is magnified. Guidelines are provided for future research and exercise practitioners.     

Microfluidic devices for studying heterotypic cell-cell interactions and tissue specimen cultures under controlled microenvironments

Microfluidic devices allow for precise control of the cellular and noncellular microenvironment at physiologically relevant length- and time-scales. These devices have been shown to mimic the complex in vivo microenvironment better than conventional in vitro assays, and allow real-time monitoring of homotypic or heterotypic cellular interactions. Microfluidic culture platforms enable new assay designs for culturing multiple different cell populations and∕or tissue specimens under controlled user-defined conditions. Applications include fundamental studies of cell population behaviors, high-throughput drug screening, and tissue engineering. In this review, we summarize recent developments in this field along with studies of heterotypic cell-cell interactions and tissue specimen culture in microfluidic devices from our own laboratory.     

An Investigation of the Potential of Interactive Simulations for Developing System Thinking Skills in Elementary School: A case study with fifth‐graders and sixth‐graders

The purpose of this study was to investigate the impact of a simulation‐based learning environment on elementary school students’ (11–12 years old) development of system thinking skills. The learning environment included interactive simulations using the Stagecast Creator software to simulate the ecosystem of a marsh. Simulations are an important tool in any effort to develop system thinking, because they have the potential to highlight the dynamic nature of systems. Before the implementation of the learning environment (over a period of five 90‐min lessons) two written tests were administered to the students, investigating the development of seven aspects of system thinking. The same tests were administered after the implementation. Specifically, four of the tasks included in each test were associated with skills concerning the structure and the elements of a system and three were associated with the processes and interactions taking place within a system. The findings indicated that elementary school students have the potential to develop system thinking skills. The proposed learning environment provoked considerable improvements in some system thinking skills during a relatively brief learning process. However, the learning environment was not successful in promoting feedback thinking. We interpret these results in view of the difficulties encountered by the students. We also discuss the implications of our findings for the design of learning environments.