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81.
Constructing Scientific Explanations Through Writing 总被引:4,自引:0,他引:4
Perry D. Klein 《Instructional Science》2004,32(3):191-231
This study examined the writing strategies andtext characteristics associated withdiscovering a scientific principle by writingabout an experiment. Sixty-four universitystudents (non-science majors) carried out aphysics experiment concerning either buoyancy,or the forces acting on a balance scale, thenwrote an informal journal-style note about itwhile thinking-aloud. They providedexplanations of the phenomena beforeexperimenting, immediately after experimenting(before writing), and again after writing aboutthe experiment. Students' verbal protocolswere segmented and writing operations wereidentified; the rhetorical structures of theirtexts were analyzed; and each students' levelof general writing strategy was identified. Afactor analysis showed that six componentsaccounted for 76% of the variance in thesemeasures. Logistic regression analysis showedthat type of science experiment and two writingfactors, Problem Solving and Comparisons inText, discriminated 86% of cases in whichstudents made explanatory gains during thewriting interval. The results generallyexemplified a metacognitive, problem solvingmodel of writing to learn. However, incontrast to dominant metacognitive models,setting content goals, applying moderatelysophisticated writing strategies, and extensiveuse of content sources were important for learning. 相似文献
82.
Joseph Klein 《Education and Information Technologies》2004,9(4):321-331
This paper presents a comparison of the effectiveness of educational decisions taken by means of a holistic-intuitive procedure and a computerized decision support system (DSS). Four groups of teachers were asked to resolve an educational dilemma, first using the holistic procedure and a second time using the DSS program. Each group was given an identical dilemma but at different levels of complexity. Data processing controlled for the participants' educational background and seniority in education. At the lowest level of complexity, the two procedures were similarly effective. The efficiency of holistic decision making declined significantly at higher levels of complexity. Specific factors were identified that contributed to the differences in effectiveness. The findings lead to a deeper understanding of the advantages and limitations of the use of DSS in education. 相似文献
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The cohort growth model (CGM) is a method for estimating the parameters of a latent growth model (LGM) based on cross-sectional data. The CGM models the interindividual differences in the growth rate, and it models how subjects’ growth rate is related to their initial status. We derive model identification for the CGM and illustrate, in a simulation study, that the CGM provides unbiased parameter estimates in most simulation conditions. Based on empirical data we compare the estimates of the CGM with the estimates of the LGM. The results were comparable for both models. Although the estimates of the (co)-variances were different, the estimates of both models led to similar conclusions on the developmental change. Finally, we discuss the advantages and limitations of the CGM, and we provide recommendations for its use in empirical research. 相似文献
86.
Bill G. Aldridge 《Journal of Science Education and Technology》1992,1(1):13-21
The Project on Scope, Sequence, and Coordination of Secondary School Science (SS&C) is a major national project designed to reform science education, K-12. Based on research on learning science, the project includes provision for hands-on experience, sequencing over time at successively higher levels of abstraction, and taking account of student preconceptions. Associated with SS&C is a performance-based student assessment project which incorporates compact-disc interactive (CD-I) technology. The SS&C project and its assessment component were initiated by the author and have become projects of the National Science Teachers Association (NSTA) funded by the National Science Foundation and the U.S. Department of Education. Projects are underway in California, North Carolina, Iowa, Puerto Rico, Texas, and Alaska. 相似文献
87.
Carolyn Okell Jones Bill Roberts M.Susan Hurley Geraldine Peacock 《Child abuse & neglect》1981,5(1):53-58
This course, first presented by the Open University in 1980, is designed for independent study by people who, in the course of their working lives, come into contact with families suffering serious internal conflicts which place any members—adult or child—in danger of physical or emotional abuse in their own home. The course has been developed at a level which should make it a serious contribution to in-service training for a wide variety of professionals and experienced voluntary workers. It is unique in that it not only examines constructive and destructive aspects of conflict but also integrates written material (16 units) with an audiovisual component (8 TV programmes and 7 cassette tapes) on prevention, diagnosis and intervention relating to the whole spectrum of family conflict and violence including child abuse, sexual abuse, adolescent abuse, spouse abuse, abuse of and by the elderly and abuse of parents by their children. This paper provides a brief outline of the course aims, objectives and content together with information on its usage in the UK and the availability of certain components for international usage. 相似文献
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The mathematics education community has shown considerable awareness of the international status of their discipline. While
internationalization of the discipline is not a new phenomenon, globalization is a relatively recent term in educational discourse.
This paper presents a theoretical model towards the study of globalization and internationalization in mathematics education
based on previous publication by the authors. Secondly, it identifies some key issues that have been discussed in the literature
and that may require further discussion and research in the field. In particular it discusses the issue of similarity of mathematics
education curricula around the world. The concept of a global curriculum is rejected in favor for more internationalized approach
to curriculum reform based on collaboration between mathematics educators. 相似文献
90.
Maria Araceli Ruiz‐Primo Richard J. Shavelson Laura Hamilton Steve Klein 《科学教学研究杂志》2002,39(5):369-393
We propose a multilevel‐multifaceted approach to evaluating the impact of education reform on student achievement that would be sensitive to context and small treatment effects. The approach uses different assessments based on their proximity to the enacted curriculum. Immediate assessments are artifacts (students' products) from the enactment of the curriculum; close assessments parallel the content and activities of the unit/curriculum; proximal assessments tap knowledge and skills relevant to the curriculum, but topics can be different; and distal assessments reflect state/national standards in a particular knowledge domain. To provide evidence about the sensitivity of the multilevel approach in ascertaining outcomes of hands‐on science programs we administered close, proximal, and distal performance assessments to evaluate the impact of instruction based on two Full Option Science System units—Variables, and Mixtures and Solutions—in a Bay Area school district. Results indicated that close assessments were more sensitive to the changes in students' pre‐ to post‐test performance than proximal assessments. © 2002 Wiley Periodicals, Inc. J Res Sci Teach 39: 369–393, 2002 相似文献