全文获取类型
收费全文 | 654篇 |
免费 | 15篇 |
专业分类
教育 | 510篇 |
科学研究 | 15篇 |
各国文化 | 6篇 |
体育 | 92篇 |
文化理论 | 4篇 |
信息传播 | 42篇 |
出版年
2023年 | 4篇 |
2022年 | 10篇 |
2021年 | 16篇 |
2020年 | 23篇 |
2019年 | 37篇 |
2018年 | 43篇 |
2017年 | 35篇 |
2016年 | 34篇 |
2015年 | 25篇 |
2014年 | 25篇 |
2013年 | 151篇 |
2012年 | 25篇 |
2011年 | 20篇 |
2010年 | 19篇 |
2009年 | 25篇 |
2008年 | 20篇 |
2007年 | 10篇 |
2006年 | 11篇 |
2005年 | 14篇 |
2004年 | 9篇 |
2003年 | 9篇 |
2002年 | 10篇 |
2001年 | 5篇 |
2000年 | 4篇 |
1999年 | 8篇 |
1998年 | 1篇 |
1997年 | 4篇 |
1996年 | 7篇 |
1995年 | 7篇 |
1994年 | 4篇 |
1993年 | 10篇 |
1992年 | 9篇 |
1991年 | 1篇 |
1990年 | 3篇 |
1989年 | 3篇 |
1988年 | 7篇 |
1987年 | 2篇 |
1986年 | 2篇 |
1985年 | 1篇 |
1984年 | 1篇 |
1983年 | 1篇 |
1982年 | 3篇 |
1981年 | 2篇 |
1980年 | 2篇 |
1976年 | 3篇 |
1975年 | 1篇 |
1973年 | 1篇 |
1971年 | 1篇 |
1967年 | 1篇 |
排序方式: 共有669条查询结果,搜索用时 15 毫秒
81.
Beatriz B. Gomes Filipe A.V. Conceição David R. Pendergast Ross H. Sanders Mário A.P. Vaz João Paulo Vilas-Boas 《Sports biomechanics / International Society of Biomechanics in Sports》2013,12(4):394-403
AbstractDrag is one of the major factors that influences kayaking performance. To focus on the drag of the kayak’s hull shape and the paddlers’ weight per se, the passive drag (Dp) was measured on a flat-water sprint course for one paddler with added weights. Dp was measured by an electromechanical towing device using a load cell, at incremental and constant velocities from 2.78 to 5.56 m/s. Three kayaks of different sizes and shapes (Nelo® K1 Quattro-M, ML, and L) were used and the paddlers’ body weight was adjusted with weights so the total paddler weight in the kayak was 65, 75, and 85 kg. The mean Dp increased by the power function of D = kvn (mean R2 = .990; SD .006). The Dp went from 21.37?±?1.29 N at 2.78 m/s to 89.32?±?6.43 N at 5.56 m/s. For the two lighter weighted kayaks (65 and 75 kg), the lowest Dp was observed with different kayak sizes (M, ML, or L) depending on the target velocity. The manufacturers suggest that paddlers should select a kayak size according to their body weight to minimise drag; however, the results of this study suggest that target velocities, and thus competition distance should also be factored into kayak selection. 相似文献
82.
Jo Kuykendall 《Early Childhood Education Journal》1992,19(4):25-27
“Keep the sand low, Mike, so it doesn't accidentally get in someone's eyes. That would hurt. Yes, like that — you and Jonathan are building some very long roads. Would a little water help you pack them smoothly?” This teacher's tone of voice is accepting, and her words show understanding of the lifelong learning process. 相似文献
83.
Mary Jo Dondlinger Julie McLeod Sheri Vasinda 《Journal of Research on Technology in Education》2016,48(4):258-273
This article explores links between student experiences with technology-rich mathematics instruction and the ISTE Standards for Students. Research methods applied constructivist grounded theory to analyze data from student interviews against the ISTE Standards for Students to identify which elements of the design of this learning environment seemed to support the attainment of both mathematics content objectives and the ISTE Standards for Students. Researchers then identify guiding principles for the effective design of technology-supported, student-centered learning environments based on analysis of the results. (Keywords: ISTE standards, mathematics education, student- created work, technology-rich learning) 相似文献
84.
85.
Accomplishing lessons in postcolonial classrooms: comparative perspectives from Botswana and Brunei Darussalam 总被引:1,自引:0,他引:1
Drawing on observations and audio‐recordings of classroom language use in two postcolonial societies, the Republic of Botswana in Africa and the Sultanate of Brunei Darussalam in south‐east Asia, this study seeks to explore how teachers and pupils face the challenge of accomplishing teaching and learning using a language which is not their own. In both Botswana and Brunei Darussalam, English is the official language of instruction for some subjects from mid‐primary school level. Unlike many comparative studies which concentrate on the macro or national level, the focus of this study is the micro‐level of classroom interaction. The study shows that there are both similarities and differences across the two contexts in the ways teachers and pupils engage with language(s) through a range of monolingual and bilingual strategies. In comparing the discourses of primary‐level classrooms in Botswana and Brunei Darussalam, the study demonstrates the tensions in the language policies and practices in the two postcolonial countries. The pressure of globalisation has resulted in the privileging of imported over indigenous languages and the study shows the pragmatic responses of the classroom participants in the two contexts. 相似文献
86.
Research has shown that children as young as three and four can think on many different levels if they are encouraged to do so (Pepler & Ross, 1981; Turner & Durrett, 1975). Educators can promote young children's thinking by asking appropriate questions and by providing learning activities that require children to think beyond the recall or memorization level (What Works, 1986). Asking good questions is an art — an art that can be learned and refined with practice and with conscious effort.Jean M. Shaw and Mary Jo Puckett Cliatt are associate professors in the School of Education at the University of Mississippi in University, MS. 相似文献
87.
Within the mathematics education literature, the term constructivism has been subject to a diversity of interpretations, many of which are trivializations of original theoretical work. We suggest that trivialized versions of constructivism continue to be promulgated due, in large part,to misunderstandings of some of the vocabulary adopted by its advocates. This situation has been the source of considerable frustration in our ongoing efforts to communicate the insights and implications of radical and social constructivist theories to preservice and practicing teachers. We discuss some of the specifics of these frustrations along with strategies intended to flag and circumvent them in our work with teachers. The writing is structured around a set of recursively elaborated interpretations of a classroom episode. Developed around varied understandings of the terms structure and construct, these interpretations are intended to show how we have worked with teachers to foster a deep appreciation of how learning might be reframed as dependent on, rather than determined by, teaching.This revised version was published online in September 2005 with corrections to the Cover Date. 相似文献
88.
This article provides an extended, comprehensive example of how teachers, schools, districts, and external factors (e.g., parental pressure and policy mandates) shape curriculum research in the U.S. It retrospectively examines how three different middle school curriculum units were implemented and scaled‐up in a large, diverse school system. The curriculum materials were cognitively based, hands‐on, guided inquiry units; each focused on a different “big idea” in science. The units met some criteria for instructional strategies rated by the Project 2061 Curriculum Analysis. Using evidence‐based decisions, two of the units were found to be effective and equitable, and went to scale, but one was not effective. However, the course of scale‐up was also affected by a changing policy climate, and proceeded in unpredictable ways, with small scale effects not found at large scale, and experienced teachers less effective than inexperienced teachers. Four years after funding ended, none of the units were sustained within the school district. The interactions between the demands of the units and of the school district's policy environment suggests reasons why this occurred, despite evidence that two of the units were successful with diverse learners. © 2012 Wiley Periodicals, Inc. J Res Sci Teach 49: 305–332, 2012 相似文献
89.
This paper examines the earnings returns to learning that takes place following the conventional ‘school-to-work’ stage of the life-course. We operationalise such ‘lifelong learning’ as the attainment of certified qualifications in adulthood, following the completion of the first period of continuous full-time education. Using data from the British Household Panel Survey (BHPS) for the period 1991–2006, our approach and findings represent an important addition to the existing evidence base. By using annual data, we are able to employ the fixed effects estimator, which eliminates the problem of time-invariant unobserved heterogeneity. Our dynamic specification uses a lag structure to consider how earnings returns evolve in the medium and longer run, whilst also controlling for wage trends which were evident prior to qualification attainment. Our results show a medium-run return for women of 10% on hourly wages. For men, initial suggestions of a similar positive return are eliminated once pre-qualification trends are taken into account. This suggests that adult learning has a causal effect on women's subsequent earnings but, for men, any apparent gain is due to selection. 相似文献
90.