全文获取类型
收费全文 | 31142篇 |
免费 | 437篇 |
国内免费 | 151篇 |
专业分类
教育 | 21651篇 |
科学研究 | 3010篇 |
各国文化 | 291篇 |
体育 | 3153篇 |
综合类 | 50篇 |
文化理论 | 247篇 |
信息传播 | 3328篇 |
出版年
2022年 | 183篇 |
2021年 | 292篇 |
2020年 | 496篇 |
2019年 | 660篇 |
2018年 | 927篇 |
2017年 | 1008篇 |
2016年 | 934篇 |
2015年 | 579篇 |
2014年 | 762篇 |
2013年 | 5622篇 |
2012年 | 741篇 |
2011年 | 818篇 |
2010年 | 636篇 |
2009年 | 638篇 |
2008年 | 677篇 |
2007年 | 641篇 |
2006年 | 610篇 |
2005年 | 526篇 |
2004年 | 713篇 |
2003年 | 650篇 |
2002年 | 701篇 |
2001年 | 787篇 |
2000年 | 599篇 |
1999年 | 529篇 |
1998年 | 298篇 |
1997年 | 314篇 |
1996年 | 330篇 |
1995年 | 303篇 |
1994年 | 300篇 |
1993年 | 258篇 |
1992年 | 431篇 |
1991年 | 394篇 |
1990年 | 440篇 |
1989年 | 424篇 |
1988年 | 388篇 |
1987年 | 356篇 |
1986年 | 353篇 |
1985年 | 432篇 |
1984年 | 361篇 |
1983年 | 359篇 |
1982年 | 282篇 |
1981年 | 277篇 |
1980年 | 257篇 |
1979年 | 354篇 |
1978年 | 290篇 |
1977年 | 254篇 |
1976年 | 238篇 |
1975年 | 183篇 |
1974年 | 185篇 |
1973年 | 209篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
971.
Stephanie A. Rahill 《Psychology in the schools》2018,55(6):693-706
School psychologists spend a great deal of time translating assessment results into a psychoeducational report. The importance of creating reports that are both useful and understandable to the readers of the report while also being efficient for the school psychologist cannot be overstated. This study examines parent and teacher perceptions regarding the quality, understandability, and usefulness of school‐based psychological reports. Results of the surveys indicate that both parents and teachers perceive psychological reports as focusing more on tests and test scores as opposed to information that helps to understand the child or assists with intervention development. Strategies for upgrading reports to better meet the needs of parent and teacher readers are discussed. 相似文献
972.
Magdalena M. Apanasionok Richard P. Hastings Corinna F. Grindle Richard C. Watkins Andreas Paris 《科学教学研究杂志》2019,56(7):847-880
A comprehensive review of the literature was conducted to identify current practice on teaching science to students with intellectual disability (ID) and/or Autism Spectrum Disorder (ASD) in relation to two review questions—students' science outcomes and students' and teachers' experiences of the interventions. Six databases related to education, psychology, and science were systematically searched. A detailed protocol can be viewed on PROSPERO (registration number: CRD42017057323). Thirty studies were identified that reported on science interventions and 20 on student/teacher experiences of the interventions. The majority of the studies targeted science vocabulary and concepts. Other targets included inquiry skills and comprehension skills. The majority of the interventions used components of systematic instruction (n = 23). Five studies focused on self-directed learning and two on comprehension-based instruction. Students and teachers reported positive experiences of the interventions. The findings suggest that components of systematic instruction in particular might be effective in teaching science content to students with ID and/or ASD. Further research is needed to explore the effectiveness of identified interventions on teaching more complex science skills and with students with severe disabilities. Some limitations related to the search strategy are highlighted. 相似文献
973.
974.
Young children often learn less from video than face-to-face presentations. Meta-regression models were used to examine the average size of this difference (video deficit) and investigate moderators. An average deficit of about half of a standard deviation was reported across 122 independent effect sizes from 59 reports, involving children ages 0–6 years. Moderator analyses suggested (a) the deficit decreased with age, (b) object retrieval studies showed larger deficits than other domains, and (c) there was no difference between studies using live versus prerecorded video. Results are consistent with a multiple-mechanism explanation for the deficit. However, the analyses highlighted potential quality and publication bias issues that may have resulted in overestimation of the effect and should be addressed by future researchers. 相似文献
975.
As low-stakes testing contexts increase, low test-taking effort may serve as a serious validity threat. One common solution to this problem is to identify noneffortful responses and treat them as missing during parameter estimation via the effort-moderated item response theory (EM-IRT) model. Although this model has been shown to outperform traditional IRT models (e.g., two-parameter logistic [2PL]) in parameter estimation under simulated conditions, prior research has failed to examine its performance under violations to the model’s assumptions. Therefore, the objective of this simulation study was to examine item and mean ability parameter recovery when violating the assumptions that noneffortful responding occurs randomly (Assumption 1) and is unrelated to the underlying ability of examinees (Assumption 2). Results demonstrated that, across conditions, the EM-IRT model provided robust item parameter estimates to violations of Assumption 1. However, bias values greater than 0.20 SDs were observed for the EM-IRT model when violating Assumption 2; nonetheless, these values were still lower than the 2PL model. In terms of mean ability estimates, model results indicated equal performance between the EM-IRT and 2PL models across conditions. Across both models, mean ability estimates were found to be biased by more than 0.25 SDs when violating Assumption 2. However, our accompanying empirical study suggested that this biasing occurred under extreme conditions that may not be present in some operational settings. Overall, these results suggest that the EM-IRT model provides superior item and equal mean ability parameter estimates in the presence of model violations under realistic conditions when compared with the 2PL model. 相似文献
976.
Marcelle A. Siegel 《Journal of Science Teacher Education》2014,25(3):289-308
This study illustrated a pathway of growth that a preservice teacher might traverse when learning to use and develop equitable assessments (EA). The study is rare in that it looks at the development of preservice teachers’ understanding and ability to design EA. I examined the understanding and implementation of EA of 23 secondary preservice teachers within two classes. The methods classes focused on the academic content area of science. Participants’ journals, teaching philosophies, and inquiry-based science units served as data sources. Participants progressed from a simple view of EA as “fairness” to a more sophisticated view of EA, including: ways to increase fairness, the importance of challenging students, and using assessments for learning. Results also showed changes in preservice teachers’ views of learners and the purpose of assessment. While understanding developed robustly, teachers’ assessment plans in their units were not as strong. Teacher education programs need to place more emphasis on developing critical understanding of EA practices to meet the needs of diverse learners. 相似文献
977.
Educational technology research and development - 相似文献
978.
The purpose of this review was to synthesize the research on the relationship between performance on Piagetian tasks of concrete operations and performance on mathematics learning tasks in order to determine whether the Piagetian tasks make useful readiness measures. The research consistently indicates that, while there is a positive correlation between performance on Piagetian tasks and mathematics achievement, many school mathematics tasks can be mastered by children who have not yet developed the reasoning abilities measured by Piagetian tasks. This does not diminish the validity of Piaget's theory, but rather suggests that the kinds of reasoning processes identified by Piaget are not essential in solving many school mathematics tasks. 相似文献
979.
The performance of 43 Hispanic engineering and science majors on a task that consists of reading a sentence describing a mathematical relationship between two variables, and then writing an equation describing the relationship, is investigated in both English and Spanish. Results are compared with grade point average and with language proficiency. Comparison of the bilingual group to a monolingual group consisting of 52 engineering and science students shows that performance, as measured by either the mathematical translation task or grade point average, is more strongly correlated with language proficiency for the bilingual group. Clinical interviews conducted with samples from each group reveal large differences in the interpretation of the mathematical task between Hispanics and monolinguals. Suggestions are made for the improvement of the technical education of Hispanics. 相似文献
980.
Do Children with Autism Use the Speaker's Direction of Gaze Strategy to Crack the Code of Language? 总被引:7,自引:1,他引:7
Normal toddlers infer the referent of a novel word by consulting the Speaker's direction of Gaze. That is, they use the Speaker's Direction of Gaze (SDG) strategy. This is a far more powerful strategy than the alternative, the Listener's Direction of Gaze (LDG) strategy. In Study 1 we tested if children with autism, who have well-documented impairments in joint attention, used the SDG or the LDG strategy to learn a novel word for a novel object. Results showed that although 70.6% of children with mental handicap passed the test by making the correct mapping between a novel word and a novel object, via the SDG strategy, only 29.4% of children with autism did so. Instead, their reliance on the LDG strategy led to mapping errors. In Study 2 a group of normal children, whose chronological age (24 months old) was eqated with the verbal mental age of the 2 clinical groups in Study I, was tested using a similar procedure. Results showed that 79% of this normal group passed the test by making the correct mapping between a novel word and a novel object using the SDG strategy. Taken together, the results from both studies suggest that children with autism are relatively insensitive to a speaker's gaze direction as an index of the speaker's intention to refer . This result is consistent with previous findings showing that children with autism are relatively "blind" to the mentalistic significance of the eyes. Discussion centers on how the absence of an SDG strategy might disrupt specific aspects of language development in autism. 相似文献