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   18083篇
  免费   223篇
  国内免费   32篇
教育   12749篇
科学研究   1912篇
各国文化   225篇
体育   1507篇
综合类   7篇
文化理论   147篇
信息传播   1791篇
  2021年   173篇
  2020年   253篇
  2019年   375篇
  2018年   487篇
  2017年   476篇
  2016年   499篇
  2015年   332篇
  2014年   417篇
  2013年   3433篇
  2012年   377篇
  2011年   413篇
  2010年   373篇
  2009年   316篇
  2008年   383篇
  2007年   325篇
  2006年   311篇
  2005年   302篇
  2004年   313篇
  2003年   280篇
  2002年   263篇
  2001年   512篇
  2000年   359篇
  1999年   324篇
  1998年   157篇
  1997年   207篇
  1996年   179篇
  1995年   174篇
  1994年   195篇
  1993年   154篇
  1992年   228篇
  1991年   259篇
  1990年   243篇
  1989年   246篇
  1988年   201篇
  1987年   214篇
  1986年   210篇
  1985年   258篇
  1984年   213篇
  1983年   206篇
  1982年   175篇
  1981年   169篇
  1980年   149篇
  1979年   214篇
  1978年   188篇
  1977年   163篇
  1976年   127篇
  1975年   152篇
  1974年   126篇
  1973年   138篇
  1971年   119篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
51.
52.
53.
54.
55.
Medical students at the Schulich School of Medicine and Dentistry at The University of Western Ontario in London, Ontario, Canada, learn clinical facts about the hepatobiliary system as transplant surgeon Dr. Vivian McAlister (at the far right) demonstrates Whipple's procedure in the anatomy laboratory. In this issue of ASE, Ullah and colleagues describe an extracurricular student initiative known as the Surgically Oriented Anatomy Program (SOAP), which aims to deliver anatomy teaching from a surgical perspective through the philosophy of “education through recreation”.  相似文献   
56.
In this study, we examined 96 undergraduate non-science majors’ conceptions of stem cells, stem cell research, and cloning. This study was performed at a large, Midwest, research extensive university. Participants in the study were asked to answer 23 questions relating to stem cells, stem cell research, and cloning in an on-line assessment before and after instruction. Two goals of the instruction were to: (1) help students construct accurate scientific ideas, and (2) enhance their reasoning about socioscientific issues. The course structure included interactive lectures, case discussions, hands-on activities, and independent projects. Overall, students’ understandings of stem cells, stem cell research, and cloning increased from pre-test to post-test. For example, on the post-test, students gained knowledge concerning the age of an organism related to the type of stem cell it possesses. However, we found that some incorrect ideas that were evident on the pre-test persisted after instruction. For example, before and after instruction several students maintained the idea that stem cells can currently be used to produce organs.  相似文献   
57.
Early childhood curricula should be authentic and child-centered, however, many teachers still rely on direct instruction lessons. To better define how an integrated curriculum meets the needs of students, this study examined teacher talk and actions during instructional activities with first and second graders under two conditions: (1) subject-integrated social studies lessons of an integrated curriculum unit (experimental condition); and (2) single subject-focused mathematics lessons of a traditional separate subject curriculum (control condition). The mixed-methods study sought to define and compare characteristics of both curriculum approaches. Fourteen hours of observations were collected in each setting. In the integrated curriculum setting, the teacher was a facilitator of teamwork, offering choices, and giving praise; students made choices, decisions, and worked collaboratively. In the traditional setting, the teacher delivered direct instruction and controlled behavior; students followed directions, recalled knowledge, and worked individually. Less teacher energy was expended for behavior management in the integrated curriculum setting, indicating intrinsic motivation of students. Implementation of integrated curricula is recommended because of the student-centered focus that results in greater motivation, ownership, and teamwork, along with deeper knowledge connections. Because many factors hinder implementation, teachers need support when first teaching with this approach.  相似文献   
58.
Every interaction within an early childhood program either promotes community or disrupts it. Therefore, excellent early childhood programs have in place a process that pulls the energies and abilities of all the members of the school community together so that everyone—children, educators, parents, and community members—develop well. In particular, healthy interactions between educators and families create the necessary conditions for the early childhood programs: (1) to impact the lifepaths of the families; and, in turn, (2) to engage the families in the work of improving the early childhood programs. In this article, research on the Jewish Early Childhood Education Initiative (JECEI) is presented. JECEI was selected for study because JECEI early childhood programs are characterized by healthy relationships, the capacity to successfully promote children’s learning and development, and the engagement of families in the work of school improvement.  相似文献   
59.
60.
Educational multi-user virtual environments (MUVEs) have been shown to be effective platforms for situated science inquiry curricula. While researchers find MUVEs to be supportive of collaborative scientific inquiry processes, the complex mix of multi-modal messages present in MUVEs can lead to cognitive overload, with learners unable to effectively process the rich information encountered in virtual space. In this study, we investigated the effect of communication modality on cognitive load and science inquiry learning in students completing a science inquiry curriculum in an educational MUVE. Seventy-eight undergraduate education majors from a large southwestern university participated in this control-treatment study. Significant positive results were found for reducing cognitive load for participants communicating through voice-based chat, although this reduction was not found to influence learning outcomes. We conclude that use of voice-based communication can successfully reduce cognitive load in MUVE-based inquiry curricula.  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