首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   53673篇
  免费   678篇
  国内免费   45篇
教育   39188篇
科学研究   4763篇
各国文化   448篇
体育   3825篇
综合类   42篇
文化理论   732篇
信息传播   5398篇
  2021年   433篇
  2020年   682篇
  2019年   972篇
  2018年   3259篇
  2017年   3224篇
  2016年   2706篇
  2015年   875篇
  2014年   1152篇
  2013年   8181篇
  2012年   1183篇
  2011年   1735篇
  2010年   1585篇
  2009年   1219篇
  2008年   1525篇
  2007年   1920篇
  2006年   877篇
  2005年   1087篇
  2004年   1127篇
  2003年   933篇
  2002年   780篇
  2001年   790篇
  2000年   852篇
  1999年   759篇
  1998年   447篇
  1997年   469篇
  1996年   539篇
  1995年   435篇
  1994年   453篇
  1993年   401篇
  1992年   602篇
  1991年   620篇
  1990年   612篇
  1989年   622篇
  1988年   570篇
  1987年   532篇
  1986年   542篇
  1985年   630篇
  1984年   517篇
  1983年   522篇
  1982年   422篇
  1981年   428篇
  1980年   417篇
  1979年   552篇
  1978年   451篇
  1977年   408篇
  1976年   340篇
  1975年   290篇
  1974年   278篇
  1973年   304篇
  1971年   257篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
81.
82.
83.
The purpose of this study was to describe the development of elementary students' skill in making predictions and of their understanding of what predicting means. The study involved observing and assessing the performance of 167 children on the Physical Manipulation Test (PMT), a test involving the manipulation of science materials and equipment. Children were interviewed about what they understand predicting to mean, how they use it at school and at home, and why they think it is important. For each of the seven topics tested, even the youngest children were able to offer predictions. Accuracy varied with the topic, increasing between Grades 1 and 4 and leveling off after that. The increase in skill involved children's growing ability to attend to patterns discerned through their own observations. Four levels in the development of predicting skill, as it relates to particular topics, are described. Children's understanding of predicting showed steady improvement through Grade 6. Children's awareness of their use of predicting at school and at home, and their ability to explain the importance of predicting, also increased through Grades 1 to 6, with a spurt at Grade 4. Children understood predicting to be an internal process in which one uses knowledge to anticipate a future event; they regarded predicting as an important way of being intellectually involved with the world.  相似文献   
84.
85.
86.
The project of studying children in order to understand them, which lies at the heart of contemporary thinking about children and their education, is misconceived. It rests, jrst of all, upon a false belief that we can only come to know something properly by deliberately and systematically pursuing knowledge of it. Secondly, it offers a paradigm of knowing children which justifies parents and teachers in not giving themselves to children. By re-interpreting the problems that adults experience with children as technical, as arising from lack of information about them, it ignores the personal and moral dimension of adults' relations with children and thus further alienates them from one another.  相似文献   
87.
88.
This article discusses the changing relationships of authors and publishers, the current trends and challenges they face, and the direction of these relationships in the future. As the STM publishing industry finds itself in the midst of significant technological and economic changes, this article provides background to these changes and looks at the key elements, including open access business development, institutional repository trends, and emerging public financing policies in the future.  相似文献   
89.
90.
ABSTRACT It is argued that sport, like science or medicine, is a valued human practice and is characterised as much by the moral manner in which its participants conduct themselves as by the pursuit of its own skills, standards and excellences. Virtues, such as justice, honesty and courage, are not only necessary to pursue its goals but to protect it from being corrupted by external interests. After explicating the practice view of sport in contrast to the sociological view, the nature of competition in sport is discussed before examining two related issues: winning at all costs and the taking of performance-enhancing drugs. The importance of practices to education and the good life is also outlined.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号