全文获取类型
收费全文 | 1640篇 |
免费 | 20篇 |
专业分类
教育 | 1327篇 |
科学研究 | 36篇 |
各国文化 | 37篇 |
体育 | 75篇 |
综合类 | 1篇 |
文化理论 | 5篇 |
信息传播 | 179篇 |
出版年
2023年 | 3篇 |
2022年 | 14篇 |
2021年 | 18篇 |
2020年 | 40篇 |
2019年 | 76篇 |
2018年 | 93篇 |
2017年 | 76篇 |
2016年 | 71篇 |
2015年 | 34篇 |
2014年 | 65篇 |
2013年 | 374篇 |
2012年 | 45篇 |
2011年 | 53篇 |
2010年 | 45篇 |
2009年 | 49篇 |
2008年 | 54篇 |
2007年 | 51篇 |
2006年 | 40篇 |
2005年 | 39篇 |
2004年 | 31篇 |
2003年 | 35篇 |
2002年 | 27篇 |
2001年 | 27篇 |
2000年 | 23篇 |
1999年 | 25篇 |
1998年 | 18篇 |
1997年 | 23篇 |
1996年 | 7篇 |
1995年 | 18篇 |
1994年 | 19篇 |
1993年 | 9篇 |
1992年 | 10篇 |
1991年 | 13篇 |
1990年 | 19篇 |
1989年 | 15篇 |
1988年 | 11篇 |
1987年 | 13篇 |
1986年 | 5篇 |
1985年 | 9篇 |
1984年 | 4篇 |
1983年 | 9篇 |
1982年 | 6篇 |
1981年 | 8篇 |
1980年 | 7篇 |
1979年 | 4篇 |
1978年 | 4篇 |
1976年 | 4篇 |
1973年 | 4篇 |
1971年 | 3篇 |
1860年 | 2篇 |
排序方式: 共有1660条查询结果,搜索用时 15 毫秒
171.
Ohne Zusammenfassung 相似文献
172.
Stephen L. Thompson Christine Lotter Xumei Fann Laurie Taylor 《Journal of Science Teacher Education》2016,27(4):439-463
Researchers examined how an inquiry-based instructional treatment emphasizing interrelated plant processes influenced 210 elementary pre-service teachers’ (PTs) conceptions of three plant processes, photosynthesis, cellular respiration, and transpiration, and the interrelated nature of these processes. The instructional treatment required PTs to predict the fate of a healthy plant in a sealed terrarium (Plant-in-a-Jar), justify their predictions, observe the plant over a 5-week period, and complete guided inquiry activities centered on one of the targeted plant processes each week. Data sources included PTs’ pre- and post-predictions with accompanying justifications, course artifacts such as weekly terrarium observations and science journal entries, and group models of the interrelated plant processes occurring within the sealed terraria. A subset of 33 volunteer PTs also completed interviews the week the Plant-in-a-Jar scenario was introduced and approximately 4 months after the instructional intervention ended. Pre- and post-predictions from all PTs as well as interview responses from the subgroup of PTs, were coded into categories based on key plant processes emphasized in the Next Generation Science Standards. Study findings revealed that PTs developed more accurate conceptions of plant processes and their interrelated nature as a result of the instructional intervention. Primary patterns of change in PTs’ plant process conceptions included development of more accurate conceptions of how water is used by plants, more accurate conceptions of photosynthesis features, and more accurate conceptions of photosynthesis and cellular respiration as transformative processes. 相似文献
173.
Christine Redman 《理论付诸实践》2017,56(4):318-326
The main focus here is to examine the benefits of defining and developing an engineering curriculum for elementary schools. Like many other international educational systems, Australian educational settings have been seeking to effectively implement science, technology, engineering, and mathematics (STEM) education. However, current assumptions and expectations of STEM education are broad, poorly defined and intangible. This article deliberates on possible contributions and impediments that are preventing teachers from achieving engineering education in their classrooms. Using positioning theory, this article offers possible ways that the specific literacies of engineering can be better realized in teacher practices. A closer alignment will be necessary between the visions and expectations of STEM education, as perceived by governments, business, industry, and schools, to ensure a realization of the potential of STEM education. Engineering education in elementary school settings warrants the investment of time to understand what it proffers, and to enable teachers to identity and refine their practices to optimize the many benefits afforded. 相似文献
174.
Christopher L. Cunningham Dobrina M. Okorn Christine E. Howard 《Learning & behavior》1997,25(1):31-42
DBA/2J mice were exposed to a distinctive floor stimulus (CS+) and ethanol (2 g/kg) in a place conditioning paradigm. A different floor stimulus (CS?) was presented with saline. Mice injected just before or 30 min before CS exposure (Groups 0, ?30) showed conditioned place preference, whereas mice injected right after exposure to the CS (Group 5) displayed place aversion (Experiment 1). None of the other groups (?120, ?60, 15, 60) showed place conditioning. Handling and saline injection given just before or after CS exposure were unable to produce place conditioning (Experiment 2). However, there was a positive relationship between ethanol concentration (10% vs. 20%) and test performance, suggesting that peritoneal irritation influences place conditioning (Experiment 3). Overall, these findings support the suggestion that intraperitoneal injection of ethanol produces an initial short-duration aversive effect that is followed by a longer lasting positive motivational effect. 相似文献
175.
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
176.
Christine Halse Kerry Kennedy John J. Cogan 《International Journal of Educational Research》2004,41(7-8):584-594
This chapter provides a cross-societal discussion of the findings of the Schooling for the future study, the case studies. It examines why senior educators and policy leaders in each of the six case study societies believe that bureaucratic school systems are the most likely scenario for future even though these are not the most desired. It examines some of the key factors that account for senior educators and policy leaders’ views, and the changes they argue are needed to achieve the desired scenario for the future. The chapter concludes with a discussion of the contribution and the implications of the study for the usefulness of the OECD scenarios as policy tools. 相似文献
177.
This article contributes to the growing scholarly literature about students as partners in learning and teaching in higher education by describing an initiative designed to support partnership and a study investigating international staff and student perspectives. The initiative – an international summer institute – is a four-day, professional development experience that brought together students and staff from seven countries to learn about partnership and develop specific partnership projects. Participants in the institute were invited to contribute to a qualitative study exploring their experiences of students as partners work and their perceptions of the institute’s capacity to support it. Given that much existing research on this topic tends to be celebratory, we focus here on the challenges participants ascribed to student-staff partnership, and on the features of the summer institute they thought particularly useful in helping them to navigate these difficulties. Looking beyond the summer institute, we consider the implications of these findings for those looking to support partnership more broadly. 相似文献
178.
Jill J. Martin Christopher H. Skinner Christine E. Neddenriep 《Psychology in the schools》2001,38(4):391-400
Researchers have shown that students' perceptions of mathematics assignments could be improved by interspersing additional briefer, easier problems (e.g., Logan and Skinner, 1998). The current study was designed to extend this research to reading tasks. Seventh‐grade students read out loud both a control passage and a similar experimental passage that contained additional interspersed brief (i.e., 16 words), easy (i.e., first‐grade reading level) paragraphs. Students then selected the passage that would require the least effort to read and the least time to read. Students also indicated the passage they liked most (preference) and the passage that they would like to read again (choice). Significantly more students selected the control passage as requiring less time to read, but no differences were found for preference, choice, or effort selections. The results failed to confirm earlier research on the interspersal procedure, thus our findings have applied and theoretical implications regarding causal variables that may account for the effectiveness of the interspersal procedure. Specifically, the current study suggests that the interspersal procedure may improve assignment perception only when the procedure increases discrete task‐completion rates. © 2001 John Wiley & Sons, Inc. 相似文献
179.
Susan Rowland Christine Slade Kai-Sheng Wong Brooke Whiting 《Assessment & Evaluation in Higher Education》2018,43(4):652-665
Academic integrity is important to universities and students must abide by codes of academic conduct around assessment. Students are, however, subject to multiple pressures around assessment, some of which can push them to cheat. Modern contract cheating websites are the fronts for sophisticated, commercial operations that offer individually written assessment items for a fee; to combat their use we need a better understanding of the tools they use to persuade students to become customers. In this study we examined the persuasive features of 11 highly-visible contract cheating websites and mapped these features to a previously used persuasiveness framework. We find that contract-cheating websites use a variety of credibility, interactive and informative features designed to persuade students to use their services. In addition, the sites offer low-cost, customisable products available in very short timeframes. We suggest ways in which educators can encourage academic integrity by talking with their students about how the websites promulgate their ‘just turn to us’ message. 相似文献
180.