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   8240篇
  免费   143篇
  国内免费   7篇
教育   6021篇
科学研究   497篇
各国文化   161篇
体育   695篇
综合类   3篇
文化理论   128篇
信息传播   885篇
  2022年   48篇
  2021年   74篇
  2020年   149篇
  2019年   211篇
  2018年   288篇
  2017年   307篇
  2016年   292篇
  2015年   220篇
  2014年   240篇
  2013年   1838篇
  2012年   229篇
  2011年   228篇
  2010年   208篇
  2009年   181篇
  2008年   278篇
  2007年   209篇
  2006年   208篇
  2005年   192篇
  2004年   150篇
  2003年   182篇
  2002年   163篇
  2001年   132篇
  2000年   116篇
  1999年   112篇
  1998年   105篇
  1997年   108篇
  1996年   115篇
  1995年   122篇
  1994年   116篇
  1993年   92篇
  1992年   110篇
  1991年   106篇
  1990年   101篇
  1989年   88篇
  1988年   76篇
  1987年   66篇
  1986年   55篇
  1985年   64篇
  1984年   53篇
  1983年   67篇
  1982年   72篇
  1981年   69篇
  1980年   75篇
  1979年   65篇
  1978年   45篇
  1977年   41篇
  1976年   49篇
  1975年   38篇
  1974年   32篇
  1973年   23篇
排序方式: 共有8390条查询结果,搜索用时 312 毫秒
111.
112.
113.
114.
This study examines the influence of a year-long mathematics professional development program on Kindergarten teachers’ beliefs, content knowledge, instructional practices, and their students’ achievement. The professional development program is grounded in the theoretical construct of learner-centered professional development and focuses on supporting teachers’ integration of standards-based pedagogies aligned with the Common Core State Standards in Mathematics. Data analysis included examining 15 Kindergarten teachers’ mathematics content knowledge, their beliefs about mathematics, their enactment of student-centered pedagogies, and student achievement on curriculum-based assessments. Findings indicated that teachers adopted more student-centered pedagogies and embraced more student-centered beliefs about mathematics teaching during their time in the project. Further, Kindergarten teachers also demonstrated gains in their mathematical content knowledge, and those content knowledge gains were linked to gains in student achievement.  相似文献   
115.
116.
The current study examines the association between parental support and adolescent sleep under varying levels of family stress. Participants included 316 adolescents (Mage = 16.40 years, 43% male) and their parents (Mage = 45.67 years, 91% mothers) from diverse ethnic backgrounds. Both adolescents and parents completed questionnaires and adolescents wore wrist actigraphs and completed self‐reports on their sleep for 7 consecutive days. Results indicated that under contexts of family stress, more parental support was linked to longer sleep duration, less sleep variability, and less time spent awake during the night. Findings suggest that under contexts of family stress, cohesive family relationships may provide a sense of stability and security that is necessary for healthful sleep.  相似文献   
117.
118.
119.
Models to assess mediation in the pretest–posttest control group design are understudied in the behavioral sciences even though it is the design of choice for evaluating experimental manipulations. The article provides analytical comparisons of the four most commonly used models to estimate the mediated effect in this design: analysis of covariance (ANCOVA), difference score, residualized change score, and cross-sectional model. Each of these models is fitted using a latent change score specification and a simulation study assessed bias, Type I error, power, and confidence interval coverage of the four models. All but the ANCOVA model make stringent assumptions about the stability and cross-lagged relations of the mediator and outcome that might not be plausible in real-world applications. When these assumptions do not hold, Type I error and statistical power results suggest that only the ANCOVA model has good performance. The four models are applied to an empirical example.  相似文献   
120.
Avoiding Bias in Randomised Controlled Trials in Educational Research   总被引:1,自引:0,他引:1  
Randomised controlled trials (RCTs) are often seen as the 'gold standard' of evaluative research. However, whilst randomisation will ensure comparable groups, trials are still vulnerable to a range of biases that can undermine their internal validity. In this paper we describe a number of common threats to the internal validity of RCTs and methods of countering them. We highlight a number of examples from randomised trials in education and health care where problems of execution and analysis of the RCT has undermined their internal validity. However, awareness of these potential biases can lead to careful planning to avoid or reduce their occurrence. If good quality randomised trials are to inform policy and practice in education then rigorous trials need to be designed that are the least susceptible to threats to their validity.  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