全文获取类型
| 收费全文 | 17081篇 |
| 免费 | 252篇 |
| 国内免费 | 54篇 |
专业分类
| 教育 | 12626篇 |
| 科学研究 | 1170篇 |
| 各国文化 | 183篇 |
| 体育 | 1241篇 |
| 综合类 | 44篇 |
| 文化理论 | 86篇 |
| 信息传播 | 2037篇 |
出版年
| 2021年 | 187篇 |
| 2020年 | 250篇 |
| 2019年 | 376篇 |
| 2018年 | 534篇 |
| 2017年 | 561篇 |
| 2016年 | 517篇 |
| 2015年 | 340篇 |
| 2014年 | 477篇 |
| 2013年 | 3455篇 |
| 2012年 | 459篇 |
| 2011年 | 482篇 |
| 2010年 | 416篇 |
| 2009年 | 413篇 |
| 2008年 | 426篇 |
| 2007年 | 395篇 |
| 2006年 | 423篇 |
| 2005年 | 372篇 |
| 2004年 | 258篇 |
| 2003年 | 247篇 |
| 2002年 | 228篇 |
| 2001年 | 372篇 |
| 2000年 | 293篇 |
| 1999年 | 258篇 |
| 1998年 | 165篇 |
| 1997年 | 158篇 |
| 1996年 | 172篇 |
| 1995年 | 144篇 |
| 1994年 | 155篇 |
| 1993年 | 138篇 |
| 1992年 | 216篇 |
| 1991年 | 212篇 |
| 1990年 | 240篇 |
| 1989年 | 216篇 |
| 1988年 | 177篇 |
| 1987年 | 182篇 |
| 1986年 | 189篇 |
| 1985年 | 175篇 |
| 1984年 | 181篇 |
| 1983年 | 169篇 |
| 1982年 | 134篇 |
| 1981年 | 136篇 |
| 1980年 | 133篇 |
| 1979年 | 191篇 |
| 1978年 | 161篇 |
| 1977年 | 113篇 |
| 1976年 | 120篇 |
| 1975年 | 112篇 |
| 1974年 | 100篇 |
| 1973年 | 104篇 |
| 1971年 | 102篇 |
排序方式： 共有10000条查询结果，搜索用时 31 毫秒
101.
102.
Qingli Lei Rose A. Mason Yan Ping Xin John L. Davis Marie David Catharine Lory 《Learning disabilities research & practice》2020,35(4):201-217
This single-case meta-analysis is the first to provide a quantitative synthesis of the published literature on mathematics word problem-solving intervention studies for English learners with learning disabilities and mathematics difficulties. A total of ten single-subject studies were included for analysis. The current study investigated the magnitude of the effect of mathematics interventions targeting the improvement of students’ mathematics word problem-solving performance, and analyzed variables that moderated this effect. Results indicate a moderate overall effect size of 0.81 (95% CI [0.71, 0.90]) on word problem-solving performance for English learners with learning disabilities and mathematics difficulties. Moderator variables such as the implementer of the interventions, instructional focus, and word problem-solving content significantly moderated the mathematics intervention effects. 相似文献
103.
104.
We present a variant of the Game of Pig to introduce the concepts of probability, simulation and expected value. 相似文献
105.
106.
107.
108.
109.
Abstract The authors focus on exploiting new methods of language acquisition with the help of the possibilities offered by the Internet. As a new option for computer‐assisted language learning, the Internet is considered to be a source for individual learning and problem oriented teaching in many other areas. Expanding knowledge in parallel in informatics and the English language is an asset. In addition to pointing out starting off sites for ESL teachers and introducing some interesting examples, some criteria of constructing language teaching WWW pages of our own are also listed. 相似文献
110.
Dake Zhang Yi Ding Joanna Stegall Lei Mo 《Learning disabilities research & practice》2012,27(4):167-177
Students who struggle with learning mathematics often have difficulties with geometry problem solving, which requires strong visual imagery skills. These difficulties have been correlated with deficiencies in visual working memory. Cognitive psychology has shown that chunking of visual items accommodates students’ working memory deficits. This study investigated the effects of visual‐chunking representation as a testing accommodation for improving students’ geometry problem‐solving performance. Participants were four third‐graders with difficulties in mathematics. An adapted reversal design was employed to examine the students’ performance changes during standard testing conditions and accommodated testing conditions. During the accommodated condition, students were presented with visual‐chunking images. Results suggested that the visual‐chunking representation accommodation improved students’ performance on geometry problem‐solving tasks, and an interview confirmed students’ preference for the visual‐chunking representation approach. 相似文献