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51.
Stefanie C. Gilbert Dominicus So Tina Maria Russell Thomas R. Wessel 《Journal of College Counseling》2006,9(2):111-122
Previous research found racial identity predictive of psychological distress among African American students at predominantly White colleges. This study examined these relationships among 154 African American undergraduates attending a historically Black university. Racial identity was independent of psychological distress, suggesting that African American students' racial identity predicts psychological distress only in settings in which they are the minority. 相似文献
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53.
Learning materials recommendation using good learners’ ratings and content-based filtering 总被引:1,自引:0,他引:1
Khairil Imran Ghauth Nor Aniza Abdullah 《Educational technology research and development : ETR & D》2010,58(6):711-727
The enormity of the amount of learning materials in e-learning has led to the difficulty of locating suitable learning materials
for a particular learning topic, creating the need for recommendation tools within a learning context. In this paper, we aim
to address this need by proposing a novel e-learning recommender system framework that is based on two conceptual foundations—peer
learning and social learning theories that encourage students to cooperate and learn among themselves. Our proposed framework
works on the idea of recommending learning materials with a similar content and indicating the quality of learning materials
based on good learners’ ratings. A comprehensive set of experiments were conducted to measure the system accuracy and its
impact on learner’s performance. The obtained results show that the proposed e-learning recommender system has a significant
improvement in the post-test of about 12.16% with the effect size of 0.6 and 13.11% with the effect size of 0.53 when compared
to the e-learning with a content-based recommender system and the e-learning without a recommender system, respectively. Furthermore,
the proposed recommender system performed better in terms of having a small rating deviation and a higher precision as compared
to e-learning with a content-based recommender system. 相似文献
54.
Tina Isaacs 《Assessment in Education: Principles, Policy & Practice》2010,17(3):315-334
This profile explains the assessment system in England, concentrating on those aspects that are related to government policy. It begins by putting the system in context; it then describes the national educational structure, curriculum and assessment arrangements. The government agencies responsible for carrying out education policies are introduced. In order to illustrate the intersection of curriculum and assessment development and political policy, the profile describes and discusses assessment issues that highlight the role of government and its agencies in the development, implementation and monitoring of England's national curriculum tests and 14‐to‐19 qualifications. It argues that successive governments have increasingly intervened directly in curriculum and qualifications development, and observes the growing governmental policy influence over assessment issues and the repercussions of that influence. 相似文献
55.
56.
This study employs a uniquely multi-factorial, large-scale design to investigate baseline differences and the effects of a singular outdoor educational program on environmental attitudes, knowledge and behavior among primary and secondary school students educated in four different countries. Statistical modelling approaches employed country of residence, age, nationality, sampling year, gender and urban/ rural habitation as predictor variables. Baseline scores were explained by a number of predictors but country of residence and rural-urban differences appeared as the most consistent explanatory variable for positive changes in attitude, knowledge and behavior. Given the nexus of political, social, natural and cultural data contained within the residence variable, we discuss the complex web of drivers that may influence environmental literacy and environmentally responsible behavior. Spatial variation in the value of outdoor education programs is also discussed. 相似文献
57.
58.
Tina Jacobowitz 《科学教学研究杂志》1983,20(7):621-628
Science career preferences of junior high school-aged students, while not stable predictors of ultimate career choice, do serve to direct and maintain individuals along the paths to careers in science. In this study, factors relevant to science career preferences of black eighth grade students were investigated. This issue is of particular import to blacks since they are severely underrepresented in the scientific fields. The sample consisted of 113 males and 148 females in an inner city junior high school. The Science Career Preference Scale, the Peabody Picture Vocabulary Test, and the Self-Concept of Ability Scale (Form B-Science) were administered. Mathematics and science grades were obtained from class rating sheets. Treatment of the data involved multiple regression analysis according to a hierarchical model. Results showed that of all the independent variables, sex was the strongest predictor of science career preferences, accounting for 25% of the criterion variance. The findings suggest that early adolescent science career preferences are related more to interests that are consonant with sex-role considerations than realistic assessment of mathematics or science achievement. 相似文献
59.
Despite the theorized centrality of pedagogical content knowledge (PCK) for teaching, we have little evidence of the relationship between PCK and students' learning and know relatively little about how to help teachers to develop PCK. This study is a preliminary attempt to address these gaps in our knowledge of PCK through exploration of two German physics teachers' classroom instruction in consecutive lessons on optics. We show how video analysis can be used to gather evidence for one aspect of teachers' PCK: their use of content knowledge in interactions with students. We identify three potentially important characteristics of this aspect of PCK: flexibility, richness, and learner‐centeredness. By contrasting teachers with high and low gains in student knowledge and interest, we explore potential mechanisms by which this aspect of PCK might affect student outcomes. Because German teacher preparation programs emphasize content more than pedagogical knowledge, these cases contribute to our understanding of the support that teachers with strong content knowledge may need in translating this knowledge into a form useful for teaching.Fachdidaktisches Wissen ist aus theoretischer Sicht besonders zentral für das Unterrichten. Aus empirischer Sicht gibt es bislang allerdings noch wenig Evidenz für den Einsatz fachdidaktischen Wissens während des Unterrichtens und seine Bedeutung für das Lernen von Schülerinnen und Schülern. Außerdem wissen wir wenig darüber, wie Lehrpersonen über die Zeit fachdidaktisches Wissen entwickeln. Diese Studie ist ein Versuch, diese Wissenslücken zum fachdidaktischen Wissen von Lehrpersonen zu bearbeiten. Dabei wird exemplarisch der Unterricht von zwei deutschen Physiklehrern in aufeinanderfolgenden Stunden zum Thema Optik untersucht. Die Studie zeigt wie Videoanalysen genutzt werden können, um Belege für einen Aspekt des fachdidaktischen Wissens der Lehrpersonen zu sammeln: Ihre Nutzung von inhaltlichem Wissen in der Interaktion mit den Schülerinnen und Schülern. In dieser Studie werden drei potentiell wichtige Charakteristika dieses Aspekts des fachdidaktischen Wissens identifiziert: Flexibilität, Reichhaltigkeit und Schülerorientierung. Durch die Gegenüberstellung von Lehrpersonen mit hohem und niedrigem Wissens‐ und Interessenzuwachs wurden potentielle Mechanismen untersucht, durch die dieser Aspekt des fachdidaktischen Wissens die Lernergebnisse von Schülerinnen und Schülern beeinflussen kann. Die Lehrerausbildung in Deutschland betont das inhaltliche Wissen stärker als das fachdidaktische Wissen. Die ausgewählten Fälle beschreiben, welche Unterstützung Lehrpersonen mit einem hohen fachlichen Wissen benötigen, um dieses Wissen so zu verändern, dass es für das Unterrichten genutzt werden kann. © 2012 Wiley Periodicals, Inc. J Res Sci Teach 49: 1211–1239, 2012 相似文献
60.
Hanghang Tong Spiros Papadimitriou Christos Faloutsos Philip S. Yu Tina Eliassi-Rad 《Information Retrieval》2012,15(3-4):391-411
Given a graph, how to find a small group of ‘gateways’, that is a small subset of nodes that are crucial in connecting the source to the target? For instance, given a social network, who is the best person to introduce you to, say, Chris Ferguson, the poker champion? Or, given a network of people and skills, who is the best person to help you learn about, say, wavelets? We formally formulate this problem in two scenarios: Pair-Gateway and Group-Gateway. For each scenario, we show that it is sub-modular and thus it can be solved near-optimally. We further give fast, scalable algorithms to find such gateways. Extensive experimental evaluations on real data sets demonstrate the effectiveness and efficiency of the proposed methods. 相似文献