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Based on principles of constructivism, an analysis is made of how practice in mathematical education might be reformed towards a professional practice. In addition to the widespread recommendations that mathematical teaching be based on interactive communication and that mathematical learning be active, we argue that conventional school mathematics be replaced by a constructivist school mathematics. A constructivist school mathematics is based on children's use of their schemes of action and operation in learning situations, and whatever accommodation the children make in these schemes as they use them. Through examples of our learning of the numerical schemes of five year old children we illustrate what we mean by a constructivist school mathematics. In our examples, we characterize the schemes of action and operation that we attribute to children as our interpretations of the children's activities. For this reason, we define a constructivist school mathematics to be the results of the observer's experiential abstractions in the context of interacting with children mathematically. A professional teacher is cast as one with the intellectual autonomy and power to produce a constructivist school mathematics, including the involved situations of learning and interactive mathematical communication. 相似文献
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Following treatment in a therapeutic day treatment program, a group of 35 maltreated children were compared to a matched group of 35 maltreated children who had not been enrolled in a therapeutic day treatment program. The results of matched pairs t-test analyses indicated that the treatment subjects had significantly higher developmental scores in five areas of development--fine motor, cognitive, gross motor, social/emotional, and language. Further, pretest and posttest comparisons of the percentile scores of the treatment group indicated that the posttest scores were significantly higher than the pretest scores. This study demonstrates that remediation of developmental delays in maltreated children under the age of 6 years can be accomplished through an intensive day treatment program. 相似文献
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Mentoring involves the use of an experienced individual to teach and train someone with less knowledge in a given area. Through individualized attention the mentor/teacher transfers needed information, feedback, and encouragement to the protegé/learner. The success of such a program depends heavily on the investment of effort by the mentor. Although benefits for the protegé are typically easily discerned and have been well documented in the past, the factors affecting motivation for the mentor have been less well defined. Therefore, after a discussion of the basic mentoring process and a summary of the protegé and organizational benefits, the major focus of our paper is directed to the extrinsic and intrinsic rewards attained by those who participate as mentors and to the establishment of guidelines that help to maximize the value for all involved. 相似文献
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van der Heide J 《Endeavour》2006,30(3):103-107
In 1873, Darwin replied to the second letter from a young Dutch admirer, Nicolaas Doedes, in which he had eagerly asked about Darwin's religious views. Darwin stated that he could not believe that "this grand and wondrous universe" had only arisen by chance, but also showed his doubts about the existence of God. In 1881, Darwin repeated a similar agnostic view. After the death of Darwin in 1882, Doedes incurred the wrath of Francis Darwin by publishing the confession of his father in a Dutch freethinking journal, thus revealing the sensitivity of the information Darwin shared with Doedes. 相似文献
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Despite the growing interest of scholars and policymakers to better understand the determinants for researchers in public science to transfer knowledge and technology to firms, little is known how temporary international mobility of scientists affects both their propensity to engage in knowledge and technology transfer (KTT) as well as the locus of such transfer. Based on a sample of more than 950 German academics from science and engineering faculties, we investigate how the duration and the frequency of scientists’ visits at research institutions outside their home country affect KTT activities. We find that most mobile scientists engage in KTT to firms both in the host and in their home country, suggesting that KTT activities to firms abroad do not substitute or crowd out, but complement KTT to firms in the home country. We further find that the longer research visits abroad are, the higher the likelihood that scientists engage in KTT to firms, again both in the host and the home country. However, the more frequently scientists visit institutions abroad, the more likely they are to engage in KTT to firms only in their home country. Our results therefore provide evidence for the benefits of “brain circulation”. The article contributes to the growing strand of the literature on scientist mobility and on the determinants of industry-science linkages at the individual level. 相似文献
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Cognitive play and mathematical learning in computer microworlds 总被引：1，自引：0，他引：1
Based on the constructivist principle of active learning, we focus on children's transformation of their cognitive play activity into what we regard as independent mathematical activity. We analyze how, in the process of this transformation, children modify their cognitive play activities. For such a modification to occur, we argue that the cognitive play activity has to involve operations of intelligence which yield situations of mathematical schemes.We present two distinctly different cases. If the first case, the medium of the cognitive play activity was a discrete computer microworld. we illustrate how two children transformed the playful activity of making pluralities into situations of their counting schemes. In the second case, the medium was a continuous microworld. We illustrate two children's transformation of the playful activity of making line segments (sticks) into situations of their counting schemes. We explain one child's transformation as a generalizing assimilation because it was immediate and powerful. The transformation made by the other child was more protracted, and social interaction played a prominent role. We specify several types of accommodations induced by this social interaction, accommodations we see as critical for understanding active mathematics learning. Finally, we illustrate how a playful orientation of independent mathematical activity can be inherited from cognitive play. 相似文献