全文获取类型
收费全文 | 11427篇 |
免费 | 116篇 |
国内免费 | 26篇 |
专业分类
教育 | 7880篇 |
科学研究 | 1455篇 |
各国文化 | 46篇 |
体育 | 723篇 |
综合类 | 13篇 |
文化理论 | 178篇 |
信息传播 | 1274篇 |
出版年
2022年 | 52篇 |
2021年 | 66篇 |
2020年 | 128篇 |
2019年 | 184篇 |
2018年 | 907篇 |
2017年 | 960篇 |
2016年 | 693篇 |
2015年 | 222篇 |
2014年 | 262篇 |
2013年 | 1302篇 |
2012年 | 293篇 |
2011年 | 505篇 |
2010年 | 482篇 |
2009年 | 318篇 |
2008年 | 371篇 |
2007年 | 509篇 |
2006年 | 158篇 |
2005年 | 229篇 |
2004年 | 275篇 |
2003年 | 207篇 |
2002年 | 135篇 |
2001年 | 187篇 |
2000年 | 203篇 |
1999年 | 146篇 |
1998年 | 119篇 |
1997年 | 108篇 |
1996年 | 111篇 |
1995年 | 60篇 |
1994年 | 77篇 |
1993年 | 52篇 |
1992年 | 119篇 |
1991年 | 111篇 |
1990年 | 89篇 |
1989年 | 98篇 |
1988年 | 107篇 |
1987年 | 88篇 |
1986年 | 110篇 |
1985年 | 106篇 |
1984年 | 89篇 |
1983年 | 90篇 |
1982年 | 84篇 |
1981年 | 61篇 |
1979年 | 81篇 |
1978年 | 78篇 |
1977年 | 57篇 |
1976年 | 58篇 |
1974年 | 54篇 |
1973年 | 45篇 |
1972年 | 49篇 |
1971年 | 46篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
101.
Adam E. Wyse Eric M. Stickney David Butz Amanda Beckler Catherine N. Close 《Educational Measurement》2020,39(3):60-64
There is no denying the impact that the coronravirus disease (COVID-19) outbreak has had on many aspects of our lives. This article looks at the potential impact of COVID-19 on student learning as schools abruptly morphed into virtual learning environments using data from several instructional, practice, and assessment solutions offered by Renaissance. First, three hypothetical learning scenarios are considered using normative data from Star assessments to explore the potential impact on reading and math test performace. Next, data on Focus Skills are used to highlight which grades may have missed the most foundational math and reading content if instruction was stopped or reduced. Last, data from two of Renaissance's practice tools are used to evaluate whether students were practicing key skills following school closures. The article concludes that academic decline will likely occur but may be tempered by the increased use of practice tools; effects may look different for math and reading; and may impact grades and schools differently. As such, schools may need to leverage decision-making frameworks, such as the Multi-tiered Systems of Support/Response-to-Intervention (MTSS/RTI) framework, more than ever to identify needs and target instruction where it matters most when school begins in fall 2020. 相似文献
102.
Data from surveys of parents of students in Russian schools of various types in the years 2006 to 2011 show a high level of desire to invest in their children's education. There has been a high degree of stability in aspirations and investment in spite of the economic problems caused by global recession. 相似文献
103.
104.
105.
106.
107.
108.
109.
T. Padmanabhan 《Resonance》2011,16(10):950-955
Descartes discovered the link between algebra and geometry, which forms the cornerstone of applied geometry today. 相似文献
110.
N. Yu. Berezkina 《Scientific and Technical Information Processing》2017,44(2):153-158
This paper considers the use of bibliometric methods in library and information activities, as well as the role of libraries of the Republic of Belarus in increasing the publication activities of researchers and the promotion of scientific journals. 相似文献