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891.
    

The purpose of this investigation is to examine some solutions to the problems involved in the learning and teaching of biological inheritance and the evolution of living beings at the secondary school level. For this, we implemented a teaching programme which takes into account a constructivist approach to learning and analysed the progress in students' knowledge at different times (pre-test, post-test and retention test). Qualitative and quantitative analysis of the results show that the programme instilled a knowledge close to what might be considered adequate for this educational level. As a follow up, we propose certain disciplinary criteria for selecting and sequencing the content to be taught and discuss the educational circumstances which favour the construction of student knowledge on these topics.  相似文献   
892.
This study investigated plant and animal photographs in elementary science textbooks to discern whether there were disparities in the number of plant and animal photographs or in how those photographs were labelled. We examined the Life Science sections of two nationally syndicated (USA) textbook series. For each text, we identified the photographs with plant and/or animal content and evaluated them for two features: (1) the subject of the photograph, and (2) the specificity of the label (name) provided. We found that photographs with animal subjects were more numerous than those with plant subjects; they also represented a greater diversity of animals and had a higher instance of repetition than did plant photographs. We also found a significant naming disparity: animal photographs were three times more likely to be provided with a specific label (common name) than were plant photographs. Not only were plant photographs less likely to be provided with a specific name for the plant (e.g. orchid or dandelion), but also they were commonly identified only by the name for a plant part (such as flower or leaf) or life‐form (e.g. tree or shrub). To address the disparity revealed by this study, and to encourage student interest in and knowledge about plants, we recommend that educators go beyond textbooks to expose students to a diversity of named plants, and present plants as distinct organisms rather than as a collection of parts.  相似文献   
893.
    
ABSTRACT

The purposes of the study were to assess the effects of an online learning module on the implementation of mand training by a classroom team and determine whether training improved manding for a student with multiple disabilities. The classroom team utilized the Support Needs Assessment and Planning (SNAP) process to identify supports and guide implementation of the mand training procedures. The results indicate that both the special education teacher and paraprofessional were able to implement the mand training strategy with fidelity after completing the online module and student manding increased. The classroom team reported that both the online learning module and SNAP process were valuable for planning and implementing research-based supports. Limitations, implications for practice, and future research considerations are addressed.  相似文献   
894.
  总被引:1,自引:0,他引:1  
Research suggests that conventional teaching techniques have proved largely ineffective for dealing with the problem of science students’ misconceptions or alternative frameworks. This paper reports an investigation whereby inter‐personal conflict within dyadic interactions is used as a strategy for promoting development towards correct scientific conceptions in specific areas of electrical circuits and mechanics amongst first‐year tertiary physics students. The data indicate that a large number of physics students at the tertiary level hold non‐scientific conceptions of these physical phenomena. The dyadic interaction strategy proved effective as a means of encouraging students to actively and closely consider their own thinking about basic physical concepts. Further, results highlight the importance of inter‐personal conflict in the process of conceptual change.  相似文献   
895.
896.
    
Latinos are being educated in American colleges and universities in greater numbers than ever before. Yet, despite the increases in population growth, Latinos are still falling behind. Little attention has been given to the experiences of Latino males enrolled at the community college. However, research shows that it is the community colleges in which a large portion of the college-going Latino population is enrolled. The purpose of this qualitative study is to examine how community colleges can increase Latino male engagement in the quest to promote their academic persistence. Findings suggest these 12 Latino men are faced with unique circumstances (familial commitment, employment, peers) both on and off campus that impedes their involvement. Institutions of higher education are encouraged to be more supportive by offering opportunities for engagement that are sensitive to lifestyle of these participants in order to maintain their enrollment.  相似文献   
897.
    
Community college counselors need to assess depressive symptoms in students and to differentiate depressive symptoms from anxiety symptoms to help them implement crisis intervention strategies. Two instruments available to the community college counselor are the Beck Depression Inventory-II (BDI-II) and the Inventory to Diagnose Depression (IDD). This article, which is based on the published literature, reports on and discusses the construct and discriminant validities of the BDI-II and IDD so that community college counselors may use them with knowledge of the strengths and weaknesses of each instrument. Although results should be interpreted with caution, both instruments are useful in measuring the presence or absence of depressive symptoms.  相似文献   
898.
    
ABSTRACT

The study reported in this paper examined the types of professional-development activities, support systems, and organizational structures necessary for community college faculty to make transitions from traditional teaching to Web-based teaching. Results indicate that (a) instructional change can by initiated through sustained professional development; (b) change is more meaningful and effective when it occurs in context over a sustained period of time; (c) faculty can embrace innovations when supported by knowledgeable professionals and their peers; and (d) students welcome the use of Web-based components in course work. The implications for practice may be useful to those wishing to increase faculty's online instructional competence.  相似文献   
899.
    
This article compares two structural equation modeling fit indexes—Bentler's ( 1990; Bentler & Bonett, 1980) Confirmatory Fit Index (CFI) and Steiger and Lind's (1980; Browne & Cudeck, 1993) Root Mean Square Error of Approximation (RMSEA). These two fit indexes are both conceptually linked to the noncentral chi‐square distribution, but CFI has seen much wider use in applied research, whereas RMSEA has only recently been gaining attention. The article suggests that use of CFI is problematic because of its baseline model. CFI seems to be appropriate in more exploratory contexts, whereas RMSEA is appropriate in more confirmatory contexts. On the other hand, CFI does have an established parsimony adjustment, although the adjustment included in RMSEA may be inadequate.  相似文献   
900.
    
This article demonstrates a multivariate latent growth curve methodology (LGM) for analyzing longitudinal adolescent substance use data. Hypotheses concerning the form of growth in substance use, individual differences in the common trajectory over time, and covariates influencing growth were tested. Significant linear increases existed for alcohol, cigarette, and marijuana use. Second‐order multivariate extensions of LGM indicated that associations among the individual differences parameters of the various substances could be adequately modeled by a higher order substance use construct. Family status, parent‐child conflict, peer encouragement for substance use, parent substance use, and age significantly influenced initial levels of use. Peer encouragement, change in peer encouragement, change in parent‐child conflict, age, and gender significantly influenced development of use. These findings support the influence of families and peers on the development of adolescent substance use and demonstrate the utility of multivariate extensions of LGM in the analysis of longitudinal data.  相似文献   
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