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   23046篇
  免费   399篇
  国内免费   15篇
教育   16470篇
科学研究   2032篇
各国文化   227篇
体育   1916篇
综合类   13篇
文化理论   175篇
信息传播   2627篇
  2022年   173篇
  2021年   261篇
  2020年   384篇
  2019年   605篇
  2018年   834篇
  2017年   813篇
  2016年   703篇
  2015年   424篇
  2014年   666篇
  2013年   4484篇
  2012年   641篇
  2011年   653篇
  2010年   474篇
  2009年   485篇
  2008年   542篇
  2007年   488篇
  2006年   436篇
  2005年   418篇
  2004年   373篇
  2003年   360篇
  2002年   344篇
  2001年   478篇
  2000年   400篇
  1999年   361篇
  1998年   204篇
  1997年   211篇
  1996年   240篇
  1995年   236篇
  1994年   181篇
  1993年   201篇
  1992年   321篇
  1991年   299篇
  1990年   300篇
  1989年   298篇
  1988年   255篇
  1987年   303篇
  1986年   265篇
  1985年   304篇
  1984年   247篇
  1983年   212篇
  1982年   190篇
  1981年   163篇
  1980年   153篇
  1979年   258篇
  1978年   183篇
  1977年   168篇
  1976年   153篇
  1975年   141篇
  1974年   147篇
  1971年   140篇
排序方式: 共有10000条查询结果,搜索用时 187 毫秒
171.
172.
173.
174.
175.
176.
Educational leadership can be defined as the ability of a principal to initiate school improvement, to create a learning-oriented educational climate, and to stimulate and supervise teachers in such a way that the latter may execute their tasks as effectively as possible. In 1989, 1993, and 1998, teacher perceptions of educational leadership of principals in Dutch elementary education were evaluated by means of a Rasch-scale. It turned out that the educational leadership of Dutch principals has grown considerably. In both 1989 and 1993 the effect of educational leadership on pupil achievement was investigated. While in 1989 no significant relationship was found, the results of 1993 show a significant relationship between educational leadership and average pupil achievement over 3 successive years corrected for school environment.  相似文献   
177.
178.

Recent studies in exhibitions have begun to consider the cognitive content of the ‘dialogue’ between visitor and exhibit designer. Such studies have focused on the leisure visitor and not on organised school visits. The study reported here compares the conversational content of primary school and family visitors at the London Zoo and the Natural History Museum, London. The data show that there are common features to the children's interactions with animal exhibits and that the content of the conversations varies little between family groups and school groups both within an institution and between institutions. The lack of any marked distinction between school and family visitors strongly suggests that schools are failing to make effective use of the educational potential of zoos. Secondly, the findings of this study are important in pointing to the features of animal exhibits to which children, and their accompanying adults, attend. The data suggest that there is a gulf between the level of knowledge and understanding visitors bring to the exhibits and the message that the museums and zoos may wish to communicate. It is suggested that more successful education will only be achieved when museums and zoos give more credence to understanding what the visitor already does, or does not, know.  相似文献   
179.
180.
The current study compared different learners’ static and dynamic mental images of unseen scientific species and processes in relation to their spatial ability. Learners were classified into verbal, visual and schematic. Dynamic images were classified into: appearing/disappearing, linear-movement, and rotation. Two types of scientific entities and their related processes were investigated: astronomical and microscopic. The sample included 79 female students from Grades 9 and 10. For the purpose of the study, three instruments were used. The Mental Images by Guided Imagery instrument was designed to investigate participants' visualization of static and dynamic mental images. The Water-Level Task was adopted to estimate participants' spatial ability. The Learning Styles Inventory was used to classify participants into verbal, visual and schematic learners. The research findings suggest that schematic learners outperformed verbal and visual learners in their spatial ability. They also outperformed them in their vividness of microscopic images; both micro-static and micro-dynamic images; especially in the case of appearing/disappearing images. The differences were not significant in the case of astronomical images. The results also indicate that appearing/disappearing images received the least vividness scores for all three types of learners.  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