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   7151篇
  免费   62篇
  国内免费   6篇
教育   5299篇
科学研究   739篇
各国文化   82篇
体育   387篇
综合类   8篇
文化理论   122篇
信息传播   582篇
  2021年   38篇
  2020年   51篇
  2019年   84篇
  2018年   148篇
  2017年   220篇
  2016年   256篇
  2015年   196篇
  2014年   143篇
  2013年   1153篇
  2012年   219篇
  2011年   256篇
  2010年   150篇
  2009年   126篇
  2008年   175篇
  2007年   152篇
  2006年   144篇
  2005年   761篇
  2004年   551篇
  2003年   396篇
  2002年   212篇
  2001年   132篇
  2000年   99篇
  1999年   91篇
  1998年   62篇
  1997年   66篇
  1996年   67篇
  1995年   64篇
  1994年   51篇
  1993年   55篇
  1992年   52篇
  1991年   62篇
  1990年   54篇
  1989年   57篇
  1988年   44篇
  1987年   43篇
  1986年   46篇
  1985年   56篇
  1984年   31篇
  1983年   41篇
  1982年   41篇
  1981年   43篇
  1980年   32篇
  1979年   63篇
  1978年   31篇
  1977年   47篇
  1976年   35篇
  1975年   32篇
  1974年   37篇
  1973年   24篇
  1972年   23篇
排序方式: 共有7219条查询结果,搜索用时 15 毫秒
81.
学习“三个代表”的重要思想 ,必须坚持理论联系实际的马克思主义学风。要深入把握“三个代表”重要思想的理论根据和实践根据 ,更要研究怎样切实有效地实践“三个代表”。  相似文献   
82.
83.
84.
The effects of isolation and handling on the reactivity of rats to two tactile stimuli were assessed in two experiments. In the first experiment, reactivity to more intense footshock was increased in rats raised in isolation but was not affected by handling by an experimenter. In the second experiment, increased reactivity to airpuff stimuli presented to the dorsal surface of isolation-reared rats was reduced by handling. The data suggest that the effects of handling on shock-motivated behaviors are not due to altered reactivity to shock and that the effect of housing or handling must be considered in behavioral tests in which reactivity to tactile stimulation might play a role as dependent or independent variables.  相似文献   
85.
86.
87.
We investigated differences between field-study classrooms and traditional science classrooms in terms of the learning environment and students’ attitudes to science, as well as the differential effectiveness of field-study classrooms for students differing in sex and English proficiency. A modified version of selected scales from the What Is Happening In this Class? questionnaire was used to assess the learning environment, whereas students’ attitudes were assessed with a shortened version of a scale from the Test of Science Related Attitudes. A sample of 765 grade 5 students from 17 schools responded to the learning environment and attitude scales in terms of both their traditional science classrooms and classrooms at a field-study centre in Florida. Large effect sizes supported the effectiveness of the field-studies classroom in terms of both the learning environment and student attitudes. Relative to the home school science class, the field-study class was considerably more effective for students with limited English proficiency than for native English speakers.  相似文献   
88.
This essay considers the question of why we should teach science to K-2. After initial consideration of two traditional reasons for studying science, six assertions supporting the idea that even small children should be exposed to science are given. These are, in order: (1) Children naturally enjoy observing and thinking about nature. (2) Exposing students to science develops positive attitudes towards science. (3) Early exposure to scientific phenomena leads to better understanding of the scientific concepts studied later in a formal way. (4) The use of scientifically informed language at an early age influences the eventual development of scientific concepts. (5) Children can understand scientific concepts and reason scientifically. (6) Science is an efficient means for developing scientific thinking. Concrete illustrations of some of the ideas discussed in this essay, particularly, how language and prior knowledge may influence the development of scientific concepts, are then provided. The essay concludes by emphasizing that there is a window of opportunity that educators should exploit by presenting science as part of the curriculum in both kindergarten and the first years of primary school.  相似文献   
89.
This article describes a set of computerized tools that support the design and evaluation of competency-based training programs. The training of complex skills such as air traffic control and process control requires a competency-based approach that focuses on the integration and coordination of constituent skills and transfer of learning. At the heart of the training are authentic whole-task practice situations. The instructional design tools are based on van Merriënboer's 4C/ID* methodology (1997). The article describes a training design tool (Core) that supports the analysis and design for competency-based training programs and an evaluation tool (Eval) that supports the subsequent revision of this training design.  相似文献   
90.
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