全文获取类型
收费全文 | 34949篇 |
免费 | 549篇 |
国内免费 | 40篇 |
专业分类
教育 | 24613篇 |
科学研究 | 3126篇 |
各国文化 | 347篇 |
体育 | 3014篇 |
综合类 | 55篇 |
文化理论 | 280篇 |
信息传播 | 4103篇 |
出版年
2021年 | 307篇 |
2020年 | 533篇 |
2019年 | 749篇 |
2018年 | 980篇 |
2017年 | 1122篇 |
2016年 | 1020篇 |
2015年 | 621篇 |
2014年 | 846篇 |
2013年 | 6520篇 |
2012年 | 806篇 |
2011年 | 899篇 |
2010年 | 692篇 |
2009年 | 698篇 |
2008年 | 742篇 |
2007年 | 720篇 |
2006年 | 659篇 |
2005年 | 576篇 |
2004年 | 798篇 |
2003年 | 659篇 |
2002年 | 729篇 |
2001年 | 626篇 |
2000年 | 613篇 |
1999年 | 571篇 |
1998年 | 295篇 |
1997年 | 332篇 |
1996年 | 384篇 |
1995年 | 334篇 |
1994年 | 324篇 |
1993年 | 302篇 |
1992年 | 449篇 |
1991年 | 445篇 |
1990年 | 469篇 |
1989年 | 489篇 |
1988年 | 451篇 |
1987年 | 424篇 |
1986年 | 407篇 |
1985年 | 513篇 |
1984年 | 419篇 |
1983年 | 405篇 |
1982年 | 326篇 |
1981年 | 318篇 |
1980年 | 273篇 |
1979年 | 392篇 |
1978年 | 329篇 |
1977年 | 300篇 |
1976年 | 276篇 |
1975年 | 219篇 |
1974年 | 227篇 |
1973年 | 229篇 |
1971年 | 199篇 |
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
991.
992.
993.
994.
Several authors have suggested reasons for children transferring to new schools, and they have hypothesized that the reasons may affect the nature and tenure of the transition process. The present study investigated the reasons parents of 451 elementary school children gave for changing schools and demonstrated that the reasons influenced children's ability to adjust to their new schools. Specifically, children transferring because their old school closed were more competent academically and had a higher average socioeconomic status than did the other groups. On the other hand, those transferring because of changing households had poorer academic performance and more stressful life events on average than the other groups. Finally, reasons for moving not only vary according to race, but the effects of the reasons are different for each racial group. Implications for school personnel seeking to integrate transfer students into their schools effectively are discussed. 相似文献
995.
The federal requirement to develop an Individual Family Service Plan (IFSP) for all infants and toddlers with special needs has a major conceptual difficulty that has, to date, been inadequately addressed in the literature. That problem stems from the linkage of family service to family assessment. Many authorities, attracted to parental “empowerment” theory, advocate that parents should be the authors rather than (or as well as) the objects of assessment, and that professionals and parents should be partners in assessing needs and planning services. When there is disagreement, professionals should defer to parents, who are in the best position to assess their own needs. We question the wisdom of conducting assessments with, or on, families of targeted children. But, if there are to be assessments, we argue that families are better served, and mutual respect better preserved, by a traditional complementary relationship: The professional controls the evaluation process, determines the problems (with the input of the family), and makes recommendations, which parents are then free to reject. 相似文献
996.
The Parenting Inventory: Young Children (PI) is a rating scale that measures the developmental expectations and behaviors of parents of children who are between the ages of 1 and 4 years, 11 months. Using a representative urban sample of 1,056 mothers, the PI was found to discriminate successfully between parents with children of different ages and to have substantial item-construct correlations (content validity). The PI was not strongly related to the Adult-Adolescent Parenting Inventory, a measure of parenting attitudes (discriminant validity). Reasons for this latter finding are discussed. Potential uses of the PI for practitioners working with parents in the schools are described. 相似文献
997.
998.
Cognitive theory suggests that a key to expert performance lies in the internal organization of the expert's knowledge. The authors contend that the type of technical illustration used during instruction influences knowledge organization and greatly impacts students' understanding of the content. This paper describes an experimental study that tested the impact of one type of conceptual illustration on students' understanding of the structure, function, and behavior of complex technical systems. The results show that supplementing traditional technical instruction with functional flow diagrams can improve overall system understanding. The functional flow diagrams were also found to be an effective instructional aid for enhancing students' conceptual understanding of the causal behavior of systems. In addition, the use of the functional flow diagram was found to significantly improve the subjects' ability to construct conceptual models that were similar to those of an expert. The implications of using conceptual diagrams for technical instruction are discussed and recommendations for future research in this area are provided. 相似文献
999.
1000.
The overlap of words specifically taught in reading textbooks with the contents of standardized reading achievement tests may be a source of bias that is frequently overlooked in psychoeducational assessments. This study compares the standardized achievement test performance of 62 second graders receiving instruction in two different reading curricula (Open Court and Houghton-Mifflin) to determine whether either curriculum generates different quantitative estimates of reading achievement. Reading subtest scores derived from the Kaufman Test of Educational Achievement-Brief Form (K-TEA), the Wide Range Achievement Test-Revised (WRAT-R), and the Reading Recognition and Reading Comprehension subtests from the Peabody Individual Achievement Test (PIAT) were examined. Grade level equivalents and scaled scores from the California Achievement Test (CAT) were also examined. Three Curriculum × Test repeated measures ANOVAs were conducted using grade level scores (2×7), standard scores (2×4), and CAT scaled scores (2 × 5) as dependent measures. A significant Curriculum × Test interaction was identified, suggesting differences among tests in estimates of reading ability as a function of the reading program. 相似文献