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41.
In this study we investigated the effects of two treatments supplementing students’ (16 to 18 years of age and in pre-university education) regular course in economics. One treatment, labelled concept treatment, aimed at the solidification of the students’ knowledge about economic concepts and their interrelations. The other treatment, labeled context treatment, aimed at the solidification of the connections between economic concepts and practical contexts. The aim of the study was to find out which treatment was most effective in meeting two demands that have been made by educators and advisory boards. The first demand is that students should gain competence in analysing practical problems from an economic perspective. The second demand is that students should be prepared for transfer of what they learned in the lessons to problems that are new to them.  相似文献   
42.
This article tests a longitudinal model of the antecedents and consequences of changes in identification with indigenous (Mapuche) among indigenous and nonindigenous youth in Chilean school contexts over a 6‐month period (633 nonindigenous and 270 Mapuche students, Mages = 12.47 and 12.80 years, respectively). Results revealed that in‐group norms supporting contact and quality of intergroup contact at Time 1 predicted student's changes in Mapuche identification at Time 2, which in turn predicted changes in support for adoption of Chilean culture and maintenance of Mapuche culture at Time 2; some of the relationships between these variables were found to be moderated by age and ethnicity. Conceptual and policy implications are addressed in the Discussion .  相似文献   
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This paper conjoins Derrida's analysis of aporia and boderlines with Foucault's genealogical sensibilities to rethink the attribution of recent events in education to globalisation. Three analytical domains are linked to historicise student-teacher interaction: studies of pedagogical techniques, sociological analyses of the state, and philosophical conceptions of Being and desire. This confluence of domains makes apparent multiple efforts to transgress noncrossable borders in educational work, suggesting new conceptualisations of justice and ethical responsibility in the analysis of classroom life.  相似文献   
45.
The health and nutrition implications of high sugar intake for young children are discussed. Infants and young children prefer foods that taste sweet. Sugar substitutes used in moderation can provide a compromise for child care providers who want to offer nutritious food which young children will eat. This study examined sweetener preferences of young children, including a new sweetener (Sweet One®). Participants (3–8 years of age) sampled a beverage and plain cottage cheese sweetened with either sugar or Sweet One® as part of a sensory difference test. They also ranked four vanilla puddings sweetened with sugar and three FDA approved sweeteners. In the difference test, the subjects were able to tell the difference between sugar and Sweet One® in the beverage, but not in the cottage cheese. There was no consensus among the panelists for a sweetener preference in the rank-order test.  相似文献   
46.
Learners’ self-regulation, which includes motivational variables, is influenced by personal variables within learners themselves, as well as by contextual factors. A great deal of research has focused on personal variables in learners that influence their self-regulated behaviours; yet contextual influences that operate outside of formal schooling of township school learners, although generally acknowledged, remain under-researched. The research presented in this paper explored 14 secondary township school teachers’ perceptions of the factors that influence learners’ motivation to achieve academic success. A better understanding of contextual motivational factors could influence teaching and learning, as well as provide the needed support that ultimately will enhance the academic achievement of South African township school learners. Participants perceived autonomy-supportive, extrinsic motivation, schools as positive learning environments, study and job opportunities, community projects, friends and peers, poverty, and encouragement from the local community as strong sources of motivation.  相似文献   
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This article reports on an analysis and comparison of three South African Grade 9 (13–14 years) Natural Sciences textbooks for the representation of nature of science (NOS). The analysis was framed by an analytical tool developed and validated by Abd-El-Khalick and a team of researchers in a large-scale study on the high school textbooks in the USA. The three textbooks were scored on targeted NOS aspects on a scale of ?3 to +3 that reflected the explicitness with which these aspects were addressed. The analysis revealed that the textbooks poorly depict NOS, and in particular, there was scant attention given to the social dimension of science, science versus pseudoscience and the ‘myth of the scientific method’. The findings of this study are incommensurate with the strong emphasis in a reformed school science curriculum that underlies the need for learners to understand the scientific enterprise, and how scientific knowledge develops. In view of this, the findings of this research reinforce the need for a review on the mandate given to textbook publishers and writers so that a stronger focus be placed on the development of materials that better represent the tenets of NOS.  相似文献   
49.
History teachers (N=22) and their 11th-grade students (N=451) rated the importanceof four types of questions (verbatim, paraphrase, inference and skill items) by indicating the degree to which these questions were to be expected in an upcoming teacher-made test about a particular textbook chapter. In addition, teachers classified their actual tests according to these four question types. Importance ratings of individual students showed a low correspondence with those of their teacher and no correspondence with the actual test questions (as classified by their teacher). However, teachers' importance ratings also showed a considerable number of discrepancies with the actual test questions. These findings suggest that in study-test situations, more clarity is needed about processing demands.  相似文献   
50.
The purpose of the paper is twofold: (1) To contrast the longstanding tradition of private and public courses of chemistry with the public demonstrations of physics. Whether taught in public institutions such as the Jardin du Roi or by apothecaries in their officines chemistry demonstrations were not for the entertainment of their audiences. Rather, they were intended to train people in pharmacy and natural philosophy. (2) By the end of the eighteenth-century, however, pneumatic chemistry prompted a new style of presentation and experimentation more similar to experimental physics, as shown by the famous experiment of water decomposition and recomposition performed by Lavoisier in 1785.  相似文献   
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