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991.
In this paper,a new proof of the inequality of Vicente Goncalves was given.The method may be powerful to deal with some problems of polynomials.As an application,a new inequality for the coefficients of a polynomial and its roots was derived. 相似文献
992.
Ji Shen Patrick C. Gibbons John F. Wiegers Ann P. McMahon 《Journal of Science Teacher Education》2007,18(3):431-459
We present a practical way of adapting and using four research-based assessments for different purposes in an electricity
and magnetism course for K-8 science teachers. The course is designed to accomplish conceptual change toward accepted scientific
conceptions as well as introducing teachers to materials and activities appropriate for their classrooms. Our data support
that using the research-based tests to identify alternative conceptions and discuss test results with teachers is a promising
way to use the knowledge of alternative conceptions in professional development. We also identify some mismatches between
the research of conceptual change and its use in programs of professional development.
相似文献
Ji ShenEmail: |
993.
Middle grades science teachers need professional support in practice as they implement new inquiry-based science. Professional
development schools can provide this bottom-up support through connecting preservice and inservice teacher education programs
in classroom practice. In this study, coteaching arrangements with secondary science education majors provided additional
teachers in the classroom to support a materials-rich curriculum and the needed associated pedagogies. Science education majors
provided needed assistance in troubleshooting difficulties with the new curriculum. They also provided needed content knowledge
to support inquiry, along with creating moments and space for teachers to reflect on inquiry practice. Ongoing assistance
by preservice teachers allowed inservice teachers to progress from logistical concerns in implementing kit curriculum to concerns
regarding student learning and the supporting professional development.
相似文献
Charles J. EickEmail: |
994.
Analytic Frameworks for Assessing Dialogic Argumentation in Online Learning Environments 总被引:3,自引:2,他引:1
Douglas B. Clark Victor Sampson Armin Weinberger Gijsbert Erkens 《Educational Psychology Review》2007,19(3):343-374
Over the last decade, researchers have developed sophisticated online learning environments to support students engaging in
dialogic argumentation. This review examines five categories of analytic frameworks for measuring participant interactions
within these environments focusing on (1) formal argumentation structure, (2) conceptual quality, (3) nature and function
of contributions within the dialogue, (4) epistemic nature of reasoning, and (5) argumentation sequences and interaction patterns.
Ultimately, the review underscores the diversity of theoretical perspectives represented within this research, the nature
of dialogic interaction within these environments, the importance of clearly specifying theoretical and environmental commitments
throughout the process of developing or adopting an analytic framework, and the role of analytic frameworks in the future
development of online learning environments for argumentation.
相似文献
Douglas B. ClarkEmail: |
995.
Cecilia Agudelo-Valderrama Barbara Clarke Alan J. Bishop 《Journal of Mathematics Teacher Education》2007,10(2):69-93
This article arises from a study whose overall purpose was to investigate the relationship between Colombian mathematics teachers’
conceptions of beginning algebra and their conceptions of their own teaching practices. The teachers’ understandings of their teaching practices were explored with a view to unravelling their
conceptions of change in their teaching. Focusing on the perspectives of teachers afforded opportunities that exposed the
powerful role that the teachers’ conceptions of social/institutional factors of teaching played in their conceptions of their
practices. The degree to which the teachers attributed these (external) factors as crucial reasons for what they do in their
teaching was the basis of a categorisation of their conceptions of the crucial determinants of their teaching practices into
three types. The findings are particularly relevant to our understanding of the stability of mathematics teaching approaches
in the Colombian context but have likely implications for a range of international education contexts. Specific implications
for the development of the research into teachers’ conceptions of mathematics and its teaching, and for teacher education
programmes are presented.
相似文献
Alan J. BishopEmail: |
996.
997.
2006年8月16日至20日,“国际多学科和交叉学科工程教育研讨会”在华东理工大学举行,会议的主题是“全球多学科和交叉学科工程教育”。本文将就此次会议的研讨内容说明工业界对高等工程教育的诉求,介绍相关国家的高等工程教育的改革策略,进而分析归纳面对多学科融合的高等工程教育必须关注的几个方面。 相似文献
998.
999.
美国研究型大学的院长任用方式及启示 总被引:1,自引:0,他引:1
"院为实体"和学院拥有强大权力的管理体制有利于提升大学管理的效能,其中,院长任用方式又是学院管理的关键.本文基于对美国多所研究型大学的研究,对美国研究型大学学院管理模式、院长的遴选程序、岗位职责、权力范围、考核机制、监督保障等问题进行了分析,同时结合我国大学的实际特点,对改进大学院长任用方式提出了若干有针对性的建议. 相似文献
1000.
针对大学内部行政管理的批评不绝于耳,批评的焦点主要集中在行政管理岗位过多、行政权力过大等,但总体而言,面上的评论多,深入分析少,尤其对大学行政管理结构的优化,还缺乏清晰的、可操作的研究.本研究试图从案例分析的角度,以美国一流公立研究型大学的内部管理体制为例,解读其校级行政管理结构的基本状况,以期为我国研究型大学内部管理中校级行政管理结构优化提供借鉴. 相似文献