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   122370篇
  免费   1872篇
  国内免费   234篇
教育   85396篇
科学研究   13312篇
各国文化   1994篇
体育   9219篇
综合类   171篇
文化理论   1059篇
信息传播   13325篇
  2021年   945篇
  2020年   1672篇
  2019年   2578篇
  2018年   3069篇
  2017年   3329篇
  2016年   3389篇
  2015年   2315篇
  2014年   3189篇
  2013年   27462篇
  2012年   2351篇
  2011年   2674篇
  2010年   2322篇
  2009年   2622篇
  2008年   2355篇
  2007年   2077篇
  2006年   2344篇
  2005年   2332篇
  2004年   3029篇
  2003年   2309篇
  2002年   2128篇
  2001年   1990篇
  2000年   1643篇
  1999年   1550篇
  1998年   1465篇
  1997年   1532篇
  1996年   1694篇
  1995年   1465篇
  1994年   1467篇
  1993年   1467篇
  1992年   1487篇
  1991年   1397篇
  1990年   1389篇
  1989年   1312篇
  1988年   1185篇
  1987年   1091篇
  1986年   1136篇
  1985年   1399篇
  1984年   1272篇
  1983年   1258篇
  1982年   1256篇
  1981年   1168篇
  1980年   1160篇
  1979年   1250篇
  1978年   1199篇
  1977年   1120篇
  1976年   994篇
  1975年   804篇
  1974年   811篇
  1973年   777篇
  1971年   619篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
991.
We present a variant of the Game of Pig to introduce the concepts of probability, simulation and expected value.  相似文献   
992.
993.
994.
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   
995.
996.
997.
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   
998.
This article briefly discusses the long history of violence towards disabled people which sets the context for an analysis of the modern‐day form of violence known as disability hate crime (DHC). People who look or behave differently to others often find themselves victims of violent crimes. The language used to describe disabled people contributes to their diminished position in society. A brief review of definitions of DHC and exploration of news media coverage of the Pilkington and Askew DHC cases are undertaken. Cultural scapegoating of disabled people is discussed. Disabled people are perceived as contributing to their own victimisation, the lack of support afforded to them by society and the failure of systems meant to protect them. As long as disabled people remain outside mainstream society, they are unlikely to achieve the same levels of respect and protection from crime that other groups in society are afforded.  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