全文获取类型
收费全文 | 9760篇 |
免费 | 498篇 |
国内免费 | 14篇 |
专业分类
教育 | 7844篇 |
科学研究 | 475篇 |
各国文化 | 217篇 |
体育 | 636篇 |
综合类 | 17篇 |
文化理论 | 114篇 |
信息传播 | 969篇 |
出版年
2023年 | 20篇 |
2022年 | 32篇 |
2021年 | 122篇 |
2020年 | 228篇 |
2019年 | 341篇 |
2018年 | 365篇 |
2017年 | 434篇 |
2016年 | 365篇 |
2015年 | 333篇 |
2014年 | 370篇 |
2013年 | 2360篇 |
2012年 | 335篇 |
2011年 | 366篇 |
2010年 | 333篇 |
2009年 | 299篇 |
2008年 | 351篇 |
2007年 | 295篇 |
2006年 | 251篇 |
2005年 | 260篇 |
2004年 | 219篇 |
2003年 | 196篇 |
2002年 | 183篇 |
2001年 | 153篇 |
2000年 | 154篇 |
1999年 | 103篇 |
1998年 | 92篇 |
1997年 | 107篇 |
1996年 | 120篇 |
1995年 | 93篇 |
1994年 | 95篇 |
1993年 | 83篇 |
1992年 | 98篇 |
1991年 | 80篇 |
1990年 | 93篇 |
1989年 | 65篇 |
1988年 | 76篇 |
1987年 | 59篇 |
1986年 | 65篇 |
1985年 | 76篇 |
1984年 | 70篇 |
1983年 | 75篇 |
1982年 | 59篇 |
1981年 | 44篇 |
1980年 | 46篇 |
1979年 | 51篇 |
1978年 | 52篇 |
1977年 | 34篇 |
1976年 | 27篇 |
1975年 | 19篇 |
1948年 | 18篇 |
排序方式: 共有10000条查询结果,搜索用时 46 毫秒
991.
992.
The translation from Latin of Newton's First Law (NFL) was considered in a historical perspective. The study showed that Newton's original yields two versions of complementary meanings, one temporal and the other quantitative. The latter is especially important in presenting the idea of inertia of massive bodies, and a new paradigm of understanding motion. The presentation of NFL in physics textbooks was reviewed and a decline in the status of NFL in the physics curriculum was noted. As a rule, if quoted at all, NFL is presented in its temporal form, while the quantitative form does not appear. Normally, NFL is interpreted as a special case: a trivial deduction from Newton's Second Law. Some advanced textbooks replace NFL by a modernized claim, which abandons its original meaning. We advocate the importance and nontrivial meaning of NFL, and call for its `rehabilitation' in physics instruction within the discourse mode of education. 相似文献
993.
2 studies of word learning are reported. In Study 1, 24-month-old children and 2 adults played with 3 nameless objects. These objects were placed in a clear box along with a novel nameless object. The adults then displayed excitement about the contents of the box and modeled a new word. Comparison with a control condition indicated significant learning of the new word for the novel object. Study 2 followed the same procedure with one difference: the children played with the novel object while the adults were absent. Thus, at the time of the language model the target object was novel only to the adults, not to the children. Again subjects displayed significant learning of the new word. This last finding suggests that 24-month-old children understand that adults use language for things that are novel to the discourse context and that this novelty is determined from the speaker's point of view. 相似文献
994.
995.
996.
997.
Judith Bennett Lynda Dunlop Kerry J. Knox Michael J. Reiss Rebecca Torrance Jenkins 《International Journal of Science Education》2018,40(14):1755-1773
Practical independent research projects (IRPs) are a feature of school science in a number of countries. To assess the impact of IRPs on students, a systematic review of the literature was undertaken. Thirty-nine papers met the review inclusion criteria, reporting on work from twelve countries. The review indicates that IRPs are often associated with wider initiatives such as authentic science, problem-based learning, and project-based learning. There is considerable variability in the nature of IRP work in relation to focus, models of provision, assessment, the involvement of external partners such as universities and employers, and funding, and this diversity affects judgements on the quality of the evidence base on impact. The majority of the research reviewed explored areas such as conceptual understanding, motivation to study science once it is no longer compulsory and attitudes to science, and the development of practical skills. Benefits were identified in relation to the learning of science ideas, affective responses to science, views of pursuing careers involving science, and development of a range of skills. Studies focusing on traditionally under-represented groups indicated that such students felt more positive about science as a result of undertaking IRPs. The review findings indicate that further work is needed to enhance the quality of the available evidence, to consider the ways in which IRPs can be validly assessed, to explore more fully the potential benefits for traditionally under-represented groups, and to explore more fully the potential longer-term benefits of participation in IRPs at high school level. 相似文献
998.
The relationship between research and policymaking has been discussed repeatedly. However, the debate tends to be in general, abstract terms or from a macroeconomic perspective with any examples described in a fairly cursory way. Despite the inherent complexity of the research-policy interface, analyses tend to homogenise ‘research’ and ‘policy’ as coherent entities with discussions often focusing on products (research and policies) rather than on the relationships between producers (researchers and policymakers). Here, we take one piece of research on qualifications that has influenced policy rhetoric over the last 5 years. We trace the career of the research from its production in the late 1990s in order to understand the conditions of its dormancy, re-emergence and use over the ensuing years. The paper serves to document the case, which is important in its own right, but also proposes a typology of ways in which research gets adopted and adapted into policy. 相似文献
999.
1000.