Determining the level of inquiry in teachers' questions     

George T. Ladd  Hans O. Andersen 《科学教学研究杂志》1970,7(4):395-400

The purpose of this investigation was to determine if an instrument, originally designed to classify levels of teachers' questions on the basis of logical operations, could be utilized to measure the level of inquiry present in a classroom discussion and to determine if the inquiry questioning behavior of the teacher influenced student achievement. The results of the study show that the modified classification scheme could accurately and reliably measure the inquiry level of teachers' classroom questions. The data also indicated that teachers who ask a greater proportion of high inquiry questions cause a greater change in students as measured by an achievement examination.  相似文献   

Mathematics in Physics Education: Scanning Historical Evolution of the Differential to Find a More Appropriate Model for Teaching Differential Calculus in Physics     

Joaquín Martínez-Torregrosa  Rafael López-Gay  Albert Gras-Martí 《Science & Education》2006,15(5):447-462

Despite its frequent use, there is little understanding of the concept of differential among upper high school and undergraduate students of physics. As a first step to identify the origin of this situation and to revert it, we have done a historic and epistemological study aimed at clarifying the role and the meaning of the differential in physics and at improving curricular and teaching models in the sense of Gilbert et al. (Gilbert J.K., Boulter C., & Rutherford, M.: 1998a, International Journal of Science Education 20(1), 83–97, Gilbert J.K., Boulter C., & Rutherford, M.: 1998b, International Journal of Science Education 20(2), 187–203). We describe the contributions of Leibniz and Cauchy and stress their shortcomings, which are overcome by the alternative definition proposed by the French mathematician Fréchet, dating from early 20th century. As a result of this study, we answer to some fundamental questions related to a proper understanding of the differential in physics education (for 17–19 years old students).  相似文献   

China’s mass higher education: Problem,analysis, and solutions     

David?Yunchao?ChenEmail author 《Asia Pacific Education Review》2004,5(1):23-33

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Technology as a Tool: Applying an Instructional Model to Teach Middle School Students to Use Technology as a Mediator of Learning     

Angelia?Reid-GriffinEmail author  Glenda?CarterEmail author 《Journal of Science Education and Technology》2004,13(4):495-504

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Effects of modeling on preservice science teachers during ISCS microteaching sessions     

Richard J. Rezba  Hans O. Andersen 《科学教学研究杂志》1976,13(1):13-18

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Arithmetic nature of sums of certain convergent series     

S?D?AdhikariEmail author  N?SaradhaEmail author 《Resonance》2002,7(11):35-46

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Teaching Undergraduate Mathematics on the Internet     

Johann?EngelbrechtEmail author  Ansie?Harding 《Educational Studies in Mathematics》2005,60(2):253-266

This is Part 2 of a two-part study of how APOS theory may be used to provide cognitive explanations of how students and mathematicians might think about the concept of infinity. We discuss infinite processes, describe how the mental mechanisms of interiorization and encapsulation can be used to conceive of an infinite process as a completed totality, explain the relationship between infinite processes and the objects that may result from them, and apply our analyses to certain mathematical issues related to infinity.  相似文献   

Improving the precision of the keyword-matching pornographic text filtering method using a hybrid model     

苏贵洋  李建华  马颖华  李生红 《浙江大学学报(A卷英文版)》2004,5(9):1106-1113

With the flooding of pornographic information on the Internet, how to keep people away from that offensive information is becoming one of the most important research areas in network information security. Some applications which can block or filter such information are used. Approaches in those systems can be roughly classified into two kinds:metadata based and content based. With the development of distributed technologies, content based filtering technologies will play a more and more important role in filtering systems. Keyword matching is a content based method used widely in harmful text filtering. Experiments to evaluate the recall and precision of the method showed that the precision of the method is not satisfactory, though the recall of the method is rather high. According to the results, a new pornographic text filtering model based on reconfirming is put forward. Experiments showed that the model is practical, has less loss of recall than the single keyword matching method, and has higher precision.  相似文献   

Differential Reading,Naming, and Transcribing Speeds of Japanese Romaji and Hiragana     

Jun?YamadaEmail author  Che?Kan?Leong 《Reading and writing》2005,18(4):303-323

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Theory Competition and the Process of Change   总被引：1，自引：0，他引：1  

Helen?S.?TimperleyEmail author  Judy?M.?Parr 《Journal of Educational Change》2005,6(3):227-251

The reasons why many educational change initiatives have little impact are often framed in terms of either a poorly designed process on the part of the change initiator, or in terms of problems with the attitudes, skills and/or knowledge of those responsible for implementation. In this paper, we seek to integrate these two perspectives more closely by focusing on their interface and the competing theories frequently held by the change initiators and implementers. This concept of theory competition is illustrated with a case of a national literacy initiative in New Zealand in which the change initiators wished to raise the achievement of low performing students through the development of “learning-centred” leadership in schools and evidence-based practice. The desired outcomes were not achieved because theories about what it means to be a successful leader in such a situation, the data needed to undertake the type of evidence-based analysis envisioned and school personnel beliefs about the target students were understood differently by those responsible for initiating the change and those responsible for implementing it.  相似文献