全文获取类型
收费全文 | 3406篇 |
免费 | 64篇 |
国内免费 | 5篇 |
专业分类
教育 | 2486篇 |
科学研究 | 220篇 |
各国文化 | 46篇 |
体育 | 418篇 |
综合类 | 6篇 |
文化理论 | 81篇 |
信息传播 | 218篇 |
出版年
2023年 | 27篇 |
2022年 | 54篇 |
2021年 | 90篇 |
2020年 | 133篇 |
2019年 | 202篇 |
2018年 | 268篇 |
2017年 | 254篇 |
2016年 | 216篇 |
2015年 | 151篇 |
2014年 | 165篇 |
2013年 | 724篇 |
2012年 | 194篇 |
2011年 | 121篇 |
2010年 | 86篇 |
2009年 | 78篇 |
2008年 | 82篇 |
2007年 | 68篇 |
2006年 | 60篇 |
2005年 | 53篇 |
2004年 | 44篇 |
2003年 | 38篇 |
2002年 | 48篇 |
2001年 | 28篇 |
2000年 | 26篇 |
1999年 | 13篇 |
1998年 | 21篇 |
1997年 | 14篇 |
1996年 | 20篇 |
1995年 | 17篇 |
1994年 | 14篇 |
1993年 | 9篇 |
1992年 | 14篇 |
1991年 | 8篇 |
1990年 | 15篇 |
1989年 | 11篇 |
1988年 | 6篇 |
1987年 | 4篇 |
1981年 | 5篇 |
1980年 | 8篇 |
1979年 | 5篇 |
1978年 | 6篇 |
1977年 | 5篇 |
1974年 | 5篇 |
1973年 | 3篇 |
1972年 | 5篇 |
1969年 | 3篇 |
1963年 | 3篇 |
1956年 | 3篇 |
1872年 | 4篇 |
1870年 | 4篇 |
排序方式: 共有3475条查询结果,搜索用时 15 毫秒
961.
There is emerging interest on the interactions between modelling and argumentation in specific contexts, such as genetics learning. It has been suggested that modelling might help students understand and argue on genetics. We propose modelling gene expression as a way to learn molecular genetics and diseases with a genetic component. The study is framed in Tiberghien’s (2000) two worlds of knowledge, the world of “theories & models” and the world of “objects & events”, adding a third component, the world of representations. We seek to examine how modelling and argumentation interact and connect the three worlds of knowledge while modelling gene expression. It is a case study of 10th graders learning about diseases with a genetic component. The research questions are as follows: (1) What argumentative and modelling operations do students enact in the process of modelling gene expression? Specifically, which operations allow connecting the three worlds of knowledge? (2) What are the interactions between modelling and argumentation in modelling gene expression? To what extent do these interactions help students connect the three worlds of knowledge and modelling gene expression? The argumentative operation of using evidence helps students to relate the three worlds of knowledge, enacted in all the connections. It seems to be a relationship among the number of interactions between modelling and argumentation, the connections between world of knowledge and students’ capacity to develop a more sophisticated representation. Despite this is a case study, this approach of analysis reveals potentialities for a deeper understanding of learning genetics though scientific practices. 相似文献
962.
Identity is one of the defining terms of the 1990s in England. Currently, academic, political and popular discourses highlight the pervasiveness of the term. However, what is missing from these accounts is an awareness of its philosophical roots. Consequently, most of these accounts are theoretically under‐developed, marked by conceptual confusion and conflation. This paper is concerned with the formation of identities within the context of educational arenas. More specifically, we focus upon the philosophical positions of materialism and deconstructivism, highlighting the particular dynamics of their epistemologies of identity. We suggest that at a time of political retreat and and intellectual self‐doubt among educationists, critical social scientists are making available productive conceptual frameworks within which to explore identity formations in educational sites. Recent theoretical developments in sociology and cultural studies provide an opportunity for philosophy of education to play a vital role here, in engaging with new ways of thinking about old philosophical problems. Within the context of an increasing reductionist policy focus on managerialist solutions, philosophy helps us to challenge the ideological conversion of moral and political questions into technicist ‘problems’. 相似文献
963.
Elba Gutiérrez-Santiuste María-Jesús Gallego-Arrufat 《Interactive Learning Environments》2017,25(1):62-71
The study analyzes the type and quantity of co-occurrence of social, cognitive, and teaching presence in a Community of Inquiry (CoI). Content analysis of the virtual educational communication shows units of analysis that must be assigned to more than one category. By crossing the categories of the CoI model, we observe that Social Presence is involved in all of the crossings and that graphic, linguistic, and paralinguistic elements change the meaning of the communication in the social, cognitive, and teaching interaction. We demonstrate the communicative richness of the educational encounters in which Social Presence interacts with the other elements and draw conclusions about the importance of support for communication in virtual communication. We stress the need to analyze co-occurrences to achieve a full analysis of computer-mediated communication. 相似文献
964.
965.
Antonio-Joaquín Franco-Mariscal José María Oliva-Martínez M. L. Almoraima Gil 《International Journal of Science and Mathematics Education》2016,14(5):885-906
The work reported here involved a comparative study regarding the understanding that high school students (16–18 years) have of the concept of chemical elements and their periodic classification. More specifically, the level of knowledge on this topic was compared before and after the completion of baccalaureate studies in a sample of Spanish students. In order to achieve this goal, a questionnaire was developed that included 14 items in an open format, through which various aspects of the students’ understanding of the idea of chemical element and their periodic classification were assessed. In addition, the application of this knowledge to interpret and predict the behaviour and properties of elements and to carry out calculations on the atomic composition of the elements was evaluated. Aspects concerning the acquisition of scientific knowledge, the application of knowledge to different contexts and situations, and the use of scientific evidence to draw conclusions and knowledge about the nature and history of science were evaluated. The questionnaire was previously validated with a large group of students. The results of this study show that improvements occur primarily in addressing higher level cognitive questions (analysis, synthesis and evaluation) in comparison to the lower level tasks (capacity for retention, understanding or direct application of learning). In addition, students who start high school have a very limited understanding of the ideas behind the Periodic Table of the chemical elements and that their lack of understanding, to a large extent, remains upon completion of the baccalaureate. These results suggest that there are real difficulties in understanding this topic and show the limited influence of the studies completed in high school. 相似文献
966.
The psychology of education is considered here as a strategical science. It was created in the period between 1870 and 1913, concurrently with the educational policies applied both in the United states and in Europe. An historical analysis allows to distinguish three strategies. The neo-herbartian pedagogy lends importance to instruction; mental statistics supply the means for building up the national unity through an “analysis of the circle of thoughts” (manipulation of mental representations). The Child Study approach, on the contrary, emphasizes the mechanisms through which specific interests are naturally regulated: the national unity comes out of the confrontation of all the individual differences; mental statistics supply the means for a regulation through the average. This liberal strategy had to be modified at the beginning of the 20th century: it appears necessary to monitor competitors and rationalize the social life in order to increase the national output. The psychology of education thus became one of learning and a theory of measurement which supplies the means for a fairer social deal. 相似文献
967.
Filomena Inácio Luís Faísca Christian Forkstam Susana Araújo Inês Bramão Alexandra Reis Karl Magnus Petersson 《Annals of dyslexia》2018,68(1):1-14
This study investigates the implicit sequence learning abilities of dyslexic children using an artificial grammar learning task with an extended exposure period. Twenty children with developmental dyslexia participated in the study and were matched with two control groups—one matched for age and other for reading skills. During 3 days, all participants performed an acquisition task, where they were exposed to colored geometrical forms sequences with an underlying grammatical structure. On the last day, after the acquisition task, participants were tested in a grammaticality classification task. Implicit sequence learning was present in dyslexic children, as well as in both control groups, and no differences between groups were observed. These results suggest that implicit learning deficits per se cannot explain the characteristic reading difficulties of the dyslexics. 相似文献
968.
This article on secondary schools science laboratories in Portugal focuses on how school space functions as a pedagogical and political instrument by contributing to shape the conditions for teaching and learning dynamics. The article places the impact of changes to school layouts within the larger context of a public school renovation programme, discussing how school space functions as a pedagogical and political instrument. The focus is on science laboratories as a particular learning environment for science education. The study, conducted between 2010 and 2011 in 13 renovated schools within the framework of the Portuguese Secondary School Modernisation Programme, drew on document analysis, interviews, pupil and teacher surveys and site-specific focus groups. One of the main findings is that teachers found that science laboratories were the most controversial and debated of all the renovated learning spaces. Considering that the science laboratory layout was intended to be universal across all schools, there was little intervention by the architects responsible for the renovation of the schools. Focusing on the analysis of the decision to change the science laboratory design within the aims of the education policy, this article discusses how teachers’ criticisms were a response to some of the educational policy goals underlying the renovation of school buildings and the potential impact on science education, namely, the relationship between flexibility of space organisation and pedagogical approaches. 相似文献
969.
Contributions of print exposure to first and second grade oral language and reading in Chile
下载免费PDF全文
![点击此处可从《Journal of Research in Reading》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Katherine Strasser Daniela Vergara M. Francisca del Río 《Journal of Research in Reading》2017,40(Z1):S87-S106
This study examines the contribution of print exposure to oral language (expressive vocabulary and listening comprehension) and reading (word reading and reading comprehension) in first and second grade in Chile, and tests whether the contribution of print exposure to reading comprehension is mediated by language and word reading skills. Two‐hundred and eighty one children (mean age 6.55 years) participated. Print exposure was measured with a book‐cover recognition task in first grade, and outcomes were measured both in first and second grade. Print exposure had direct effects on all outcomes in first grade and indirect effects in second grade. Effects on first grade reading comprehension were partially mediated by listening comprehension and word reading, but not vocabulary. We discuss the importance of the findings for improving reading comprehension in countries with low access to books. 相似文献
970.
Inma Rodríguez-Ardura Antoni Meseguer-Artola 《Interactive Learning Environments》2016,24(6):1030-1053
User retention is a major goal for higher education institutions running their teaching and learning programmes online. This is the first investigation into how the senses of presence and flow, together with perceptions about two central elements of the virtual education environment (didactic resource quality and instructor attitude), facilitate the user's intention to continue e-learning. We use data collected from a large sample survey of current users in a pure e-learning environment along with objective data about their performance. The results provide support to the theoretical model. The paper further offers practical suggestions for institutions and instructors who aim to provide effective e-learning experiences. 相似文献