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   41645篇
  免费   718篇
  国内免费   44篇
教育   29953篇
科学研究   3669篇
各国文化   415篇
体育   3195篇
综合类   46篇
文化理论   341篇
信息传播   4788篇
  2022年   274篇
  2021年   444篇
  2020年   688篇
  2019年   1011篇
  2018年   1391篇
  2017年   1440篇
  2016年   1308篇
  2015年   771篇
  2014年   1130篇
  2013年   8046篇
  2012年   1090篇
  2011年   1174篇
  2010年   868篇
  2009年   863篇
  2008年   980篇
  2007年   875篇
  2006年   788篇
  2005年   734篇
  2004年   684篇
  2003年   622篇
  2002年   675篇
  2001年   801篇
  2000年   709篇
  1999年   690篇
  1998年   377篇
  1997年   409篇
  1996年   458篇
  1995年   409篇
  1994年   371篇
  1993年   367篇
  1992年   576篇
  1991年   542篇
  1990年   566篇
  1989年   552篇
  1988年   502篇
  1987年   495篇
  1986年   462篇
  1985年   572篇
  1984年   457篇
  1983年   431篇
  1982年   372篇
  1981年   350篇
  1980年   312篇
  1979年   454篇
  1978年   362篇
  1977年   334篇
  1976年   291篇
  1975年   252篇
  1974年   255篇
  1973年   253篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
991.
992.
Gendered patterns in mathematics and science interest emerge in early childhood, develop over time, and ultimately reflect advanced course selection in secondary education. During the crucial time adolescents become aware of their strengths and interests and specialize accordingly, they get the opportunity to participate in out-of-school learning programs such as mathematics and science competitions. This raises the question whether mathematics and science competitions contribute to gender equity by equally promoting female and male interests. In this article, we present a systematic review on gender differences and the mechanisms explaining success and failure in mathematics and science competitions. On an international level, we found large gender differences regarding participation in all Olympiads with the exception of the biology Olympiad. In fairs and national Olympiads, overall participation rates were not gendered as such, but females preferred biology topics whereas males preferred physics related topics. Male and female achievement in fairs was comparable, but males clearly outperformed female participants at the Olympiads, with the smallest differences in the biology Olympiad. Variables and theoretical frameworks explaining participation and achievement and the role of gender in mathematics and science competitions are discussed. We suggest that gender stereotypes, through their influence on self-concept and interest, play an important role in the mechanisms resulting in low female participation rates in and beyond mathematics and science competitions (especially in physics and chemistry). The mechanisms we found explaining female representation during a national selection competition might be considered as reflecting those in female mathematics or science careers and could thus serve as food for thought on countering the gender gap in mathematics and science.  相似文献   
993.
The increased use of Attention Deficit/Hyperactivity Disorder (ADHD) medication by children has led to growing concerns. In a previous study, we found that many of the teachers that were interviewed about ADHD spontaneously associated ADHD with medication. The present study is a qualitative reanalysis of what precisely these 30 primary school teachers had spontaneously said about medication in our previous semi‐structured interviews on ADHD. Almost all respondents had experience with pupils taking ADHD medication. The majority of spontaneously mentions medication as the treatment of ADHD. Attitudes towards ADHD medication use by pupils are mainly ambivalent, but more positive than negative effects of medication are reported. However, what teachers say about ADHD medication is often not based on sound information; their attitudes tend to be formed by personal experiences rather than founded on professional and scientific sources. We conclude from our analysis that it will be in the interest of reducing the number of children on ADHD medication that teachers have good access to verified and up‐to‐date information on ADHD and medication so that they are better supported in making evidence‐based pedagogical judgments.  相似文献   
994.
A random sample of 1,000 Nationally Certified School Psychologists were mailed a 17‐item survey about treatment integrity. A total of 132 responded and answered questions about the importance of treatment integrity data for tiered interventions and the frequency and methods used to measure treatment integrity in one‐to‐one and problem‐solving team consultation. Ninety‐eight percent agreed that treatment integrity data were critical for tiered interventions. However, only 7% in one‐to‐one consultation and 0% in team consultation reported it was “always” collected. Respondents identified barriers of time, workload, system factors, and staff knowledge as explanations for why there was a gap between belief and practice. The participant responses were compared to those from a 2008 survey and found to be almost unchanged. Issues associated with decision‐making when treatment integrity data are lacking and recommendations for improving the assessment and reporting of treatment integrity are discussed.  相似文献   
995.
996.
Educational technology research and development - Authentic project-based learning (APBL) is a highly effective way for instructors to help students learn disciplinary skills, modes of thinking,...  相似文献   
997.

Backward design is a well-established design strategy that has been used to produce educational curriculum for decades. While traditionally used to plan and create classroom-based curriculum, in this paper we explore the use of backward design as a design strategy for the development of an educational mobile application, BiblioTech? “CityHacks: In Search of Sleep.” We discuss the process from initial conception to launch and updates, as well as plans for future research.

  相似文献   
998.
999.
Autonomy-supportive parenting is found to foster children’s adjustment but relatively few studies have been conducted with toddlers. In the present exploratory study, parents (N = 182) reported what practices they use when asking their toddlers (M age = 26.9 months) to engage in important yet uninteresting activities. Parents rated twenty-six potentially autonomy-supportive practices, along with a well-known scale measuring the extent to which they have a positive attitude towards autonomy support. Research Findings: Using correlational and factorial analyses, eight practices were identified: various ways to communicate empathy, providing developmentally appropriate rationales, describing the problem in an informational and neutral way, and modeling the requested behavior. This subset of autonomy-supportive practices for toddlers was positively related with toddlers’ rule internalization, providing them with further validity. Practice or Policy: These preliminary findings may be useful in guiding future conceptual, empirical, and applied work on the support of toddlers’ autonomy and its assessment in an emotionally-charged and challenging context.  相似文献   
1000.
This paper describes our efforts to systematically generate knowledge from ethnographic and other qualitative scholarship as a way of bridging intellectual gaps found in quantitative research. We ground this scholarly endeavor in the study of gangs, which has a lengthy history in the field of criminology, yet lacks a coherent, coordinated, and comparative understanding of gang dynamics, behavior, and impacts. We discuss the importance of acknowledging the multiple and mixed methodologies used in gang scholarship and detail the inductive, deductive, and iterative process that helped us (1) develop a comprehensive coding instrument for coding a range of qualitative works, (2) establish the instrument’s inter-rater reliability, and (3) remain cognizant and reflexive about the strengths of both quantitative and qualitative research. Finally, we share the critical yet informative challenges we faced throughout the project and conclude with reflections on why the project was unsuccessful in the way we originally envisioned.  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