全文获取类型
收费全文 | 18083篇 |
免费 | 223篇 |
国内免费 | 32篇 |
专业分类
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 |
出版年
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.
Shahnoor M. Ullah Andrew Bodrogi Octav Cristea Marjorie Johnson Vivian C. McAlister 《Anatomical sciences education》2012,5(3)
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.
James P. Concannon Marcelle A. Siegel Kristy Halverson Sharyn Freyermuth 《Journal of Science Education and Technology》2010,19(2):177-186
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.
Ksenia S. Zhbanova Audrey C. Rule Sarah E. Montgomery Lynn E. Nielsen 《Early Childhood Education Journal》2010,38(4):251-258
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.
Collaboration modality, cognitive load, and science inquiry learning in virtual inquiry environments
Benjamin E. Erlandson Brian C. Nelson Wilhelmina C. Savenye 《Educational technology research and development : ETR & D》2010,58(6):693-710
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