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   122157篇
  免费   1846篇
  国内免费   234篇
教育   85149篇
科学研究   13334篇
各国文化   1978篇
体育   9272篇
综合类   170篇
文化理论   1071篇
信息传播   13263篇
  2021年   935篇
  2020年   1652篇
  2019年   2572篇
  2018年   3048篇
  2017年   3320篇
  2016年   3369篇
  2015年   2302篇
  2014年   3179篇
  2013年   27381篇
  2012年   2355篇
  2011年   2659篇
  2010年   2308篇
  2009年   2602篇
  2008年   2339篇
  2007年   2079篇
  2006年   2315篇
  2005年   2306篇
  2004年   3014篇
  2003年   2326篇
  2002年   2153篇
  2001年   1978篇
  2000年   1640篇
  1999年   1531篇
  1998年   1455篇
  1997年   1520篇
  1996年   1704篇
  1995年   1468篇
  1994年   1470篇
  1993年   1478篇
  1992年   1473篇
  1991年   1403篇
  1990年   1379篇
  1989年   1306篇
  1988年   1176篇
  1987年   1098篇
  1986年   1139篇
  1985年   1401篇
  1984年   1267篇
  1983年   1265篇
  1982年   1247篇
  1981年   1178篇
  1980年   1155篇
  1979年   1226篇
  1978年   1202篇
  1977年   1115篇
  1976年   1001篇
  1975年   803篇
  1974年   807篇
  1973年   776篇
  1971年   624篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
991.
992.
We present a variant of the Game of Pig to introduce the concepts of probability, simulation and expected value.  相似文献   
993.
994.
In this article, the work of three international governmental organisations (IGOs) dealing with human rights will be discussed, namely the United Nations Educational, Scientific and Cultural Organization (UNESCO), the United Nations Children's Fund (UNICEF)1 and the Council of Europe (CoE). In the first section, the main characteristics of the three IGOs in terms of similarities and differences will be elaborated. Then, their human rights approach to education will be described, dealing with the legal foundations. In the final section, the different strategies of implementation based on both their official mission statements and their present strategy papers will be evaluated under the heading ‘competition vs. cooperation’.  相似文献   
995.
996.
Analysis of variance (ANOVA) is a test of mean differences, but the reference to variances in the name is often overlooked. Classroom activities are presented to illustrate how ANOVA works with emphasis on how to think critically about inferential reasoning.  相似文献   
997.
998.
Students with Attention Deficit Hyperactivity Disorders (ADHD) frequently experience significant difficulty mastering basic academic skills. This meta‐analysis focuses on one specific potential area of learning difficulties for these students: namely, writing. To identify the extent and depth of the potential writing challenges faced by students with ADHD, we conducted a meta‐analysis comparing the writing performance of grade 1 to 12 students with ADHD to their normally achieving peers. We located 44 papers, yielding 45 studies with 87 effect sizes. The average weighted effect sizes showed that students with ADHD obtained lower scores than their normally achieving peers for writing quality (–0.78), output (–0.64), number of genre elements (–0.69), vocabulary (–0.76), spelling (–0.80), and handwriting (–0.62). Contrary to expectations, moderator analyses found that neither study quality nor the source from which ADHD students were drawn (i.e., school/community vs. clinic/hospital) accounted for variability above sampling error alone.  相似文献   
999.
1000.
This study explored how developmentally appropriate practices influenced the affordances of a multitouch surface in an early childhood classroom. Children, ages 4 to 5 years old, were videotaped while engaged in a storymaking application on a multitouch table. As a result of the study, we found that some challenges with the functionality undermined children's autonomous control. The researchers observed numerous instances of issues with control of the medium, including height of the table, sensitivity to multiple types of touch, and limited instructions and prompts. Implications for future research and practice are discussed.  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