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11.
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
12.
基数词是英汉两种语言中出现频率较高的一类词,英汉两种语言中的基数词各有自己的一些特点。英汉两种语言基数词的系数、位数、级数组合既有相同点,又有相异点。汉语是"五位进级制",英语是"四位进级制"。 相似文献
13.
夏兴宜 《张家口职业技术学院学报》2011,24(4):57-58
唐诗中的模糊数字翻译一直是译者面对的难题。以诗人李白的名作作为主要研究对象,通过分析唐诗中模糊数字的妙用和不同译本的对比,归纳总结得出,译者应视模糊数字的具体情况采用具体的翻译策略。 相似文献
14.
沈忠燕 《浙江教育学院学报》2011,(5):91-95
通过研究∑l1+l2+…+ln=p σln/l1…ln-1lkn,σ∈{-1,1}的同余式,当k=2,3时,对任意的正整数n和素数p〉n+k-1,得到了∑l1+l2+…+ln=p 1/l1l2…lkn关于模p的同余式.对任意的素数p≥7,证明了∑l1+l2+l3+l4=p (-1)l1/l1l2l3l4关于模的同余式. 相似文献
15.
Ian Hardy 《Cambridge Journal of Education》2019,49(4):501-517
This article reveals the multiple ways in which data are constituted as a vehicle for governing teachers’ work and learning. Drawing on the concept of governance, including in relation to the sociology of numbers, and data from one school in Queensland, Australia, the research reveals how teachers’ work and learning were constituted through practices of: establishing specific ‘targets’, including various ‘audacious goals’ for school and national testing; focusing upon ‘aligning’ all forms of school, regional and national data collected within the school; and participating in various ‘data conversations’ about specific students with senior members of staff. While the research reveals how teachers found such practices beneficial for improving their practice with students, it also shows how this learning was always and everywhere framed within a broader discourse of data, and how this data-centric focus came to constitute what was valued about their work and learning, and that of their students. 相似文献
16.
17.
薛静 《大学图书情报学刊》2003,21(3):49-50,57
文章对《中图法》第四版“R2中国医学”类名、类号和类目注释所存在的几个问题进行了分析和探讨。 相似文献
18.
从当前的国情来看,家庭养老仍然是一种普遍采用、被广泛接受的社会保障模式。影响家庭养老质量的因素是多方面的,比如经济状况、子女性别差异、子女数量等。其中老人的子女数量是影响家庭养老质量的一个不可忽视的重要因素。 相似文献
19.
杨万鑫 《佳木斯教育学院学报》2015,(5)
在中学里,新学科永远是中学学生感兴趣的一点,特别是现在网络时代,密码学更是中学时代学生想去探究的学科。本文将从中学基础的因子、模、同余、最大最因数介绍起,到深层次的逆元、群、多项式逐一讨论,且立足于中学数学与信息技术两门学科,通过一个个例子把中学数学中所蕴含的密码学基础知识传输给学生,以提高了学生兴趣,并为其它学科的学习打下基础。 相似文献
20.
The present study focuses on the development of two sub-concepts necessary for a complete mathematical understanding of rational numbers, a) representations of the magnitudes of rational numbers and b) the density of rational numbers. While difficulties with rational number concepts have been seen in students' of all ages, including educated adults, little is known about the developmental trajectories of the separate sub-concepts. We measured 10- to 12-year-old students' conceptual knowledge of rational numbers at three time points over a one-year period and estimated models of their conceptual knowledge using latent variable mixture models. Knowledge of magnitude representations is necessary, but not sufficient, for knowledge of density concepts. A Latent Transition Analysis indicated that few students displayed sustained understanding of rational numbers, particularly concepts of density. Results confirm difficulties with rational number conceptual change and suggest that latent variable mixture models can be useful in documenting these processes. 相似文献