全文获取类型
收费全文 | 8577篇 |
免费 | 94篇 |
国内免费 | 3篇 |
专业分类
教育 | 6024篇 |
科学研究 | 1028篇 |
各国文化 | 79篇 |
体育 | 516篇 |
综合类 | 2篇 |
文化理论 | 61篇 |
信息传播 | 964篇 |
出版年
2021年 | 70篇 |
2020年 | 87篇 |
2019年 | 149篇 |
2018年 | 201篇 |
2017年 | 171篇 |
2016年 | 170篇 |
2015年 | 110篇 |
2014年 | 152篇 |
2013年 | 1619篇 |
2012年 | 159篇 |
2011年 | 160篇 |
2010年 | 139篇 |
2009年 | 140篇 |
2008年 | 153篇 |
2007年 | 128篇 |
2006年 | 141篇 |
2005年 | 117篇 |
2004年 | 141篇 |
2003年 | 103篇 |
2002年 | 107篇 |
2001年 | 132篇 |
2000年 | 133篇 |
1999年 | 118篇 |
1998年 | 80篇 |
1997年 | 84篇 |
1996年 | 96篇 |
1995年 | 74篇 |
1994年 | 72篇 |
1993年 | 107篇 |
1992年 | 126篇 |
1991年 | 128篇 |
1990年 | 125篇 |
1989年 | 116篇 |
1988年 | 104篇 |
1987年 | 126篇 |
1986年 | 109篇 |
1985年 | 126篇 |
1984年 | 111篇 |
1983年 | 118篇 |
1982年 | 114篇 |
1981年 | 104篇 |
1980年 | 98篇 |
1979年 | 123篇 |
1978年 | 115篇 |
1977年 | 102篇 |
1976年 | 91篇 |
1975年 | 66篇 |
1974年 | 85篇 |
1973年 | 85篇 |
1971年 | 66篇 |
排序方式: 共有8674条查询结果,搜索用时 500 毫秒
101.
102.
Evidence from the research literature suggests that a variety of cognitive factors is responsible for chemistry achievement. This investigation examined the role of four cognitive factors, namely, formal reasoning ability, prior knowledge, field dependence/ independence, and memory capacity on achievement in chemistry as measured by tests of laboratory application, chemical calculations and content knowledge. The sample comprised grade 11 students from eleven high schools who were following the same chemistry syllabus. The results indicated that prior knowledge and formal reasoning ability were each statistically significantly related to variation in chemistry achievement. Field dependence/independence and memory capacity played no significant role in chemistry achievement. 相似文献
103.
104.
Smith Dorothy V. Mulhall Pamela J. Hart Christina E. Gunstone Richard F. 《Research in Science Education》2020,50(5):2111-2130
Research in Science Education - Students learn more than science knowledge in a science classroom; they also acquire important messages about the purposes and contexts of science. Roberts (2011)... 相似文献
105.
A previous meta-analysis indicated that eight instructional factors--Questioning, Sequencing and Segmentation, Skill Modeling, Organization and Explicit Practice, Small-Group Setting, Indirect Teacher Activities (e.g., homework), Technology, and Scaffolding-captured the majority of successful intervention programs for adolescents with learning disabilities (LD). Most important was the Organization/Explicit factor, which contributed significant variance (16%) to effect size. This factor included two important instructional components: advance organization and explicit practice. In this article, we convert these findings into practical guidelines to direct instructional practice. 相似文献
106.
Cantlon JF Davis SW Libertus ME Kahane J Brannon EM Pelphrey KA 《Learning and individual differences》2011,21(6):672-680
In an effort to understand the role of interhemispheric transfer in numerical development, we investigated the relationship between children's developing knowledge of numbers and the integrity of their white matter connections between the cerebral hemispheres (the corpus callosum). We used diffusion tensor imaging (DTI) tractography analyses to test the link between the development of the corpus callosum and performance on symbolic and non-symbolic numerical judgment tasks. We were especially interested in the interhemispheric connections of parietal cortex in 6-year-old children, because regions of parietal cortex have been implicated in the development of numerical skills by several prior studies. Our results revealed significant structural differences between children and adults in the fibers of the corpus callosum connecting the left and right parietal lobes. Importantly, these structural differences were predictive of individual differences among children in performance on numerical judgment tasks: children with poor numerical performance relative to their peers exhibited reduced white matter coherence in the fibers passing through the isthmus of the corpus callosum, which connects the parietal hemispheres. 相似文献
107.
Danya M. Corkin Shirley L. Yu Suzanne F. Lindt 《Learning and individual differences》2011,21(5):602-606
Researchers have proposed that the act of postponing academic work may be divided into a traditional definition of procrastination, viewed as maladaptive, and adaptive forms of delay. Adaptive forms of delay may be more consistent with certain facets of self-regulated learning. The current study investigated this issue by examining whether the relations between aspects of self-regulated learning and active delay may be distinct from the relations these aspects of self-regulated learning have with procrastination. Among 206 undergraduates, procrastination was positively predicted by mastery-avoidance goals and negatively by metacognitive strategy usage, whereas active delay was negatively predicted by avoidance goals and positively by self-efficacy. Furthermore, students who reported higher levels of active delay also received better grades. These findings provide support that active delay is a distinct form of delay from procrastination that may be more positive due to its associations with some adaptive self-regulatory processes and academic achievement. 相似文献
108.
Part II of “Reclaiming Kindergarten” continues the discussion related to responding to the crisis in today’s kindergarten.
In Part II, two policy questions are posed, the answers to which seek to respond to this continuing crisis. The questions
center on issues related to engaging families in kindergarten and the need to consider a new early childhood paradigm where
kindergarten is part of a continuous and seamless educational experience spanning prekindergarten through third grade. As
in Part I, examples of classroom practice are used to illustrate the effective implementation of these principles in a kindergarten
classroom. 相似文献
109.
Context-based science courses stimulate students to reconstruct the information presented by connecting to their prior knowledge and experiences. However, students need support. Formative assessments inform both teacher and students about students’ knowledge deficiencies and misconceptions and how students can be supported. Research on formative assessments suggests a positive impact on students’ science achievement, although its success depends on how the formative assessment is implemented in class. The aim of this study was to provide insights into the effects of formative assessments on achievement during a context-based chemistry course on lactic acid. In a classroom action research setting, a pre-test/post-test control group design with switching replications was applied. Student achievement was measured in two pre-tests, two post-tests and a retention test. Participants were Grade 9 students from one secondary school in the Netherlands. Repeated-measures analysis showed a significant effect of formative assessments on students’ achievement. During the implementation of the formative assessments, intriguing discussions emerged between students, between students and teacher, and between teachers. Adding formative assessments to context-based approaches reinforces their strength to meet with the current challenges of chemistry education. Formative assessments affect students’ achievement positively and stimulate feedback between students and teacher(s). 相似文献
110.
Donald N. Duquette 《Child abuse & neglect》1981,5(3):325-334
The legal system is an important part of a society's response to child abuse and child neglect. Courts need to be guided in their deliberations by experts from many different professions. Consultation and in-court expert testimony is necessary from medicine, psychology, psychiatry, social work and other professions both to prove child abuse and neglect and establish the power of the court to act on behalf of a child but also to guide the court in the intervention strategy most suited to the needs of the child and his family. Non-lawyers often feel uncomfortable in the legal setting. The adversary process is foreign to their training and professional experience. Collaboration with a lawyer greatly improves their effectiveness in court. Lawyers, on the other hand, need to make maximum use of medical and social-psychological experts in the court process in the interests of their clients; but to do so lawyers need a basic understanding of the other professions. With an emphasis on a process of mutual education, the paper presents a framework for collaboration between lawyers and expert witnesses in child abuse and neglect cases. “Expert witness” is defined; informal consultation is encouraged; suggestions for selecting a collaborator are made; initial contracts between lawyer and expert, case conferencing and preparation for trial are discussed; specific advice on direct and cross examination is provided. 相似文献