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   8496篇
  免费   143篇
  国内免费   7篇
教育   6236篇
科学研究   508篇
各国文化   167篇
体育   695篇
综合类   4篇
文化理论   128篇
信息传播   908篇
  2022年   51篇
  2021年   78篇
  2020年   151篇
  2019年   212篇
  2018年   288篇
  2017年   309篇
  2016年   294篇
  2015年   222篇
  2014年   243篇
  2013年   1862篇
  2012年   229篇
  2011年   230篇
  2010年   212篇
  2009年   182篇
  2008年   278篇
  2007年   212篇
  2006年   210篇
  2005年   196篇
  2004年   151篇
  2003年   183篇
  2002年   165篇
  2001年   135篇
  2000年   118篇
  1999年   113篇
  1998年   107篇
  1997年   109篇
  1996年   117篇
  1995年   124篇
  1994年   118篇
  1993年   95篇
  1992年   114篇
  1991年   109篇
  1990年   104篇
  1989年   94篇
  1988年   84篇
  1987年   71篇
  1986年   65篇
  1985年   73篇
  1984年   60篇
  1983年   76篇
  1982年   76篇
  1981年   80篇
  1980年   84篇
  1979年   74篇
  1978年   55篇
  1977年   45篇
  1976年   52篇
  1975年   44篇
  1974年   40篇
  1971年   31篇
排序方式: 共有8646条查询结果,搜索用时 15 毫秒
901.
ABSTRACT

By age 16 the attainment of most children in or on the edge of out of home care has fallen well behind the average for their age. This paper uses the English National Pupil Database to examine how much of this falling behind occurs before the age of seven, and how any subsequent decline relates to time in care as against time outside it. We compare the previous progress of three groups of 16-year-olds: 5175 looked after by the state (CLA), 17,392 in need but not in care (CIN), and 22,567 children matched with the CLA or CIN on initial attainment, special educational needs, and eligibility for free school meals. We found that the attainment of the CIN and those CLA not yet in care was around one standard deviation below the cohort average at age seven. It then fell relative to their peers while their rate of unauthorised absences and exclusions grew. Removal from home to care appeared to halt or greatly reduce this decline but did not, on average, reverse it. We conclude that educational interventions for CLA should also include CIN, start before seven, target both school and family, and exploit the educational opportunity which care provides.  相似文献   
902.
Academic stress of international students attending U.S. universities   总被引:1,自引:0,他引:1  
This study investigated factors associated with the academic stress experienced by international students (N=412) attending graduate school in the United States. The study was grounded in a cognitive framework in which academic stress is understood as the consequence of students' appraisal of the stressfulness of role demands and their perception of their ability to cope with those demands. These two appraisals, in turn, were posited to be a function of cultural distance, students' social support network, and their role competencies. Results indicated that the primary determinants of the two types of appraisals differed. While self-perceived English-language skills and, to a lesser degree, cultural distance were the predictors of primary appraisal, self-perceived English-language, academic, and problem-solving skills and social support network were the main determinants of secondary appraisal. Implications for how universities might work more effectively with international students are discussed.  相似文献   
903.
904.
905.
906.
907.
908.
This study used a within-subjects design to explore two instructional conditions for developing vocabulary in second-grade Spanish-speaking English learners (ELs)—extended instruction and embedded instruction implemented during shared interactive reading. Words assigned to the extended condition were directly taught using a multifaceted approach that included visuals, bilingual definitions, examples, spelling, and partner-talk about the words’ meaning. Words assigned to the embedded condition were taught solely through brief definitions to embedded text, writing activities, and songs. In the control condition students heard the target words read aloud during shared interactive reading but without definitions or direct instruction. The study also explored the interaction between instructional condition and word type. Four types of words—abstract cognates, abstract noncognates, concrete cognates, and concrete noncognates—were randomly assigned to each condition. Nine teachers in four schools and 187 second-grade ELs participated in this within-subjects intervention, which took place in transitional bilingual classrooms. Findings indicated that across all word types, both extended and embedded instruction were more effective than the control condition in helping ELs acquire vocabulary. Findings also indicated that extended instruction was more effective then embedded instruction for all word types except concrete cognates suggesting that these young Spanish-speaking ELs were advantaged by word knowledge in their home language. Finally, while embedded instruction was less effective than extended instruction, it was much more effective than a control condition. Embedded instruction takes significantly less preparation and instructional time than extended instruction, offering teachers a practical way to teach more vocabulary to ELs.  相似文献   
909.
910.
In this study, we investigated the value of a concept map marking guide as an alternative formative assessment tool for science teachers to adopt for the topic of energy. Eight high school science teachers marked students’ concept maps using an itemized holistic marking guide. Their marking was compared with the researchers’ marking and the scores of a multiple-choice diagnostic test. Statistical analysis revealed that teachers evaluated students’ concept maps consistently, but the concept map scores were only mildly correlated with the multiple-choice test scores. We explored what each assessment method revealed in terms of students’ understanding with one student’s performance as a showcase. Teachers’ views on using the marking guide of concept maps as an assessment tool were also included. We discuss the value of the concept map marking guide as a formative assessment tool for science teachers to create and modify in order to encourage students’ conceptual learning.  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