基于语言值的信息技术应用能力智能自测系统     

车璐  冯凯华  曹仪铭  张也非  邹丽 《教育技术导刊》2019,18(10):135-139

针对师范生个人信息技术应用能力智能自测系统较少的问题,基于师范生信息技术应用能力自测模型,利用语言值格蕴涵代数可同时处理可比与不可比的不确定性语言值信息特性,构建师范生个人信息技术应用能力自测量表。在具有语言值信息的师范生个人信息技术应用能力智能自测系统中,利用语言值聚合算子,将数据逐层聚合,得出自测者的信息技术应用能力自测结果。实例测评显示该算法复杂度降低至[O(m+n)],证明该方法合理有效。  相似文献   

BCI-代数链复形的同调代数     

胡庆平 《黄冈师范学院学报》1991,(2)

本文在BCI-代数的正规链复形和链映射概念的基础上,引入了BCI-代数的同调代数的概念,得到了一些结果,尤其得到了BCI-同调代数的同构不变性。本文还给出了一类正规链复形—结合BCI-代数链复形。本文的一些结果可应用于对合群、Boole代数、幂集代数(运算是对称差)这三类代数,分别得到相应的同调代数的一些结果。  相似文献   

代数美与提高学生的学习兴趣     

任平泉  梁宗旗 《蒙自师范高等专科学校学报》1992,(Z1)

在代数教学中如何提高学生的学习兴趣一直是代数教师们所关心的主要问题。本文在对代数美进行探讨的基础上,对在代数教学中如何利用代数学科本身的内在美以提高学生的学习兴趣进行了初步的探讨。我们认为这对于提高学生的学习兴趣是大有帮助的。  相似文献   

用计算机代数系统求解磁屏蔽问题     

杜建明 《淮南师范学院学报》2003,5(5):3-5

借助Mathematica4.1系统软件精确求解了具有轴对称分布磁场的磁屏蔽问题,显示了计算机代数系统强大的符号运算和作图能力。  相似文献   

线性代数教学体系的改革与实践   总被引：1，自引：0，他引：1  

郑玉敏毕小山  黄锦斌 《教学研究(河北)》2001,24(1):64-65

根据线性代数课程在教学内容和教学方法上存在着滞后于社会对人才需要的矛盾，对线性代数与空间解析几何教学内容和教学方法的改革进行了探讨。  相似文献   

关于“线性代数”课程教学改革的几点思考     

赵俊芳  陈旭东  廉海荣 《中国地质教育》2012,21(2):100-102

＂线性代数＂是高等院校理工类和经济管理类等专业的一门重要的公共基础课程,也是抽象难学的一门课程。本文从＂线性代数＂教学实践中发现的问题出发,剖析其存在的原因,总结了在课程建设中的一些教学体会。  相似文献   

线性代数课程教学的探索与实践——以数学证明教育价值实现的课堂教学为例     

邓勇  吴宏 《数学教育学报》2012,(2):74-77

要教好线性代数课程,其核心问题就是要通过课堂教学,使学生理解相关的数学知识;训练和培养学生的思维能力以及数学交流能力;帮助学生寻找新旧知识之间的内在联系,使知识系统化;在巩固已有知识的基础上,让学生自己去发现新知识.要实现这一教学目标,训练学生掌握"数学证明"的概念和在实践中的应用至关重要.传统的做法往往是通过"定义一引理一证明一定理一证明一推论"这种复杂的、程序化方法来进行训练的.由于在初等代数课程中,学生很少接受严格数学证明的训练,所以这种俗套的做法成效甚微.相反,如果把线性代数的主题和概念用一种完全合理的探究式方法来引入,那么数学证明的概念和架构将牢固植根于学生的头脑,并且这种思维习惯将对他们后续课程的学习和掌握公理化推理方法都会有很大帮助.  相似文献   

Index to Volume 95     

《The Journal of educational research》2012,105(6):381-383

ABSTRACT

The authors compared a conceptual model- based problem-solving (COMPS) approach with a general heuristic instructional approach for teaching multiplication–division word-problem solving to elementary students with learning problems (LP). The results indicate that only the COMPS group significantly improved, from pretests to posttests, their performance on the criterion test (that involves equal groups and multiplicative compare problems) and the prealgebra model expression test. The study results suggest that elementary students with LP can be expected to move beyond concrete operations and to algebraically represent mathematical relations in conceptual models that drive the solution plan for accurate problem solving.  相似文献   

Adding up or Down: A Discussion     

《The Journal of educational research》2012,105(4):251-261

ABSTRACT

Increased access to algebra was a focal point of the National Mathematics Advisory Panel's 2008 report on improving mathematics learning in the United States. Past research found positive effects for early access to algebra, but the focus on average effects may mask important variation across student subgroups. The author addresses whether these positive effects hold up when the analysis is expanded to examine effect heterogeneity. Using a nationally representative sample of eighth-grade students in 1988, the author examined sensitivity of findings to methods for selection bias adjustment, heterogeneity across the propensity to take algebra in Grade 8, and across schools. The findings support past research regarding positive benefits to Grade 8 algebra and are consistent with policies that increase access to algebra in middle school.  相似文献   

Peer tutoring in algebra: A study in Middle school     

《The Journal of educational research》2012,105(6):693-699

Abstract

This study reports the academic benefits of peer tutoring in algebra for middle school students. A total of 380 students enrolled in grades 7^th and 8^th participated in the study. Two peer tutoring sessions took place during each week (10?weeks). Interactions between peers lasted 20 to 25?minutes for each session. The typology of tutoring was fixed and same-age. A pretest posttest with control group design was used. Statistical significant improvements were reported in the academic achievement variable after the implementation of the peer tutoring program for 7^th and 8^th grade courses separately and altogether. Over 87% of the students in the experimental group improved their marks. The overall effect size for the experience was reported to be medium (Hedge’s g?=?0.48). The main conclusion of this study is that fixed and same-age peer tutoring in algebra may be very beneficial for middle school students.  相似文献