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   126137篇
  免费   1903篇
  国内免费   245篇
教育   87629篇
科学研究   13569篇
各国文化   1979篇
体育   9850篇
综合类   195篇
文化理论   1084篇
信息传播   13979篇
  2021年   958篇
  2020年   1664篇
  2019年   2555篇
  2018年   3171篇
  2017年   3442篇
  2016年   3474篇
  2015年   2311篇
  2014年   3176篇
  2013年   27248篇
  2012年   2467篇
  2011年   2927篇
  2010年   2422篇
  2009年   2639篇
  2008年   2495篇
  2007年   2280篇
  2006年   2465篇
  2005年   2457篇
  2004年   3127篇
  2003年   2430篇
  2002年   2253篇
  2001年   2204篇
  2000年   1849篇
  1999年   1727篇
  1998年   1481篇
  1997年   1537篇
  1996年   1697篇
  1995年   1466篇
  1994年   1473篇
  1993年   1469篇
  1992年   1558篇
  1991年   1495篇
  1990年   1481篇
  1989年   1419篇
  1988年   1282篇
  1987年   1200篇
  1986年   1229篇
  1985年   1507篇
  1984年   1349篇
  1983年   1324篇
  1982年   1270篇
  1981年   1187篇
  1980年   1175篇
  1979年   1315篇
  1978年   1234篇
  1977年   1141篇
  1976年   1022篇
  1975年   838篇
  1974年   842篇
  1973年   800篇
  1971年   664篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
911.
912.
At the University of Maine, middle and high school teachers observed more than 250 university science, technology, engineering, and mathematics classes and collected information on the nature of instruction, including how clickers were being used. Comparisons of classes taught with (n = 80) and without (n = 184) clickers show that, while instructional behaviors differ, the use of clickers alone does not significantly impact the time instructors spend lecturing. One possible explanation stems from the observation of three distinct modes of clicker use: peer discussion, in which students had the opportunity to talk with one another during clicker questions; individual thinking, in which no peer discussion was observed; and alternative collaboration, in which students had time for discussion, but it was not paired with clicker questions. Investigation of these modes revealed differences in the range of behaviors, the amount of time instructors lecture, and how challenging the clicker questions were to answer. Because instructors can vary their instructional style from one clicker question to the next, we also explored differences in how individual instructors incorporated peer discussion during clicker questions. These findings provide new insights into the range of clicker implementation at a campus-wide level and how such findings can be used to inform targeted professional development for faculty.  相似文献   
913.
914.
915.
916.
917.
918.
Digitize-and-lend library projects can benefit societies in multiple ways, from providing information to people in remote areas or with physical disabilities to facilitating the sharing of library resources with information-poor communities. This article explores the potential of digitize and lend as well as outlines how projects can be undertaken in a manner respectful of the balance of copyright.  相似文献   
919.
920.
To explore the university experiences of students with learning disabilities (LD), 63,802 responses to the 2014 Student Experience in the Research University Survey were analyzed. Compared to other students, those with self‐reported LD (5.96 percent) had difficulty with assignments and had more obstacles caused by nonacademic responsibilities and imposed by their skill levels. Students with self‐reported LD sensed more bias toward people with disabilities on campus, and they were less satisfied with their overall experience. Interactions between disability status and age suggested even more challenges for older students who self‐reported LD. Approximately one‐third of students who self‐reported LD received accommodations. The rate of accommodations was higher among individuals who were wealthy, who lived alone, and who were out‐of‐state students. Compared to students who self‐reported LD but reported no accommodations, those with accommodations had more contact with faculty and less difficulty with assignments.  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