简谈化归思想在数学解题中的运用

本通过对大量数学解题方法的总结和归类，得出10种型数学解题的化归方法，并结合16个具体的数学解题问题，阐明了化归思想在数学解题中的运用。     

高职数学课程体系改革探索

培养具有创新精神与创造能力的高素质人才,全面提高学生的数学素质,切实加强应用数学的意识,构建数学系列课程中各门课程的结构、比例,达到知识结构合理、能力水平增加、综合素质提高的目的,以适应21世纪对各类人才的数学素质的要求.     

Bounding,An Accessible Method for Estimating Principal Causal Effects,Examined and Explained

Estimating treatment effects for subgroups defined by posttreatment behavior (i.e., estimating causal effects in a principal stratification framework) can be technically challenging and heavily reliant on strong assumptions. We investigate an alternative path: using bounds to identify ranges of possible effects that are consistent with the data. This simple approach relies on fewer assumptions and yet can result in policy-relevant findings. As we show, even moderately predictive covariates can be used to substantially tighten bounds in a straightforward manner. Via simulation, we demonstrate which types of covariates are maximally beneficial. We conclude with an analysis of a multisite experimental study of Early College High Schools. When examining the program's impact on students completing the ninth grade “on-track” for college, we find little impact for ECHS students who would otherwise attend a high-quality high school, but substantial effects for those who would not. This suggests a potential benefit in expanding these programs in areas primarily served by lower quality schools.     

MM教育方式与当代数学教育

20世纪80年代至21世纪初,对数学教育改革和研究,这大浪淘沙式的严酷条件下,“MM教育方式”几乎是唯一存活下来,而且还在发展的一种教改方案.MM教育方式对当代数学教育的启示是:不能眼睛向外,看不到我们在数学教育方面的长处;要防止去“数学化”的倾向;要将数学教育理论研究与数学实践相结合.     

新课标下的数学课堂教学

数学课堂教学不仅是传授知识、形成技能、发展智力的过程,而更是教师引导学生经历数学化的过程,是促进学生全面、主动发展的过程,是承认学生差异、张扬学生个性的过程,是学生之间自主交流、合作探索的过程,是落实德育教育的过程,是理论知识和生活问题密切联系的过程,是数学课程资源的开发、利用、拓展的过程,是数学教师专业化发展的过程.     

Growing up in a tourist destination: developing an environmental sensitivity

Abstract

This paper explores how the socio-cultural milieu of a community may foster a sense of environmental stewardship among children and young people. Ethnographic fieldwork, carried out in a popular tourist destination in Australia, revealed that the overt impacts of tourism activity such as littering provoke negative feelings among children and young people; these perceptions can in turn translate into a sensitivity towards the environment. While debated in some circles, a Significant Life Experiences (SLE) lens is useful in understanding children and young people’s lived experiences of – and sensitivity to - environmental issues in the communities where they are raised. SLE is employed in this article to explore how a sense of stewardship towards the environment is developed among children and young people growing up in a tourist destination. Findings suggest they actively contribute to protecting the environment in a variety of ways from regular beach clean ups and educating visiting tourists to participating in rallies and anti-development protests.     

可传递关系的算法实现

可传递二元关系的判定是离散数学中的一个难点．对于某个关系来说,判定它是否可传递的方法有许多．本文给出了判断可传递二元关系的一个充要条件,以及在计算机上实现的具体算法．     

谈数学教育在素质教育中的作用和地位

加强素质教育是高等教育实现人才培养目标的重要手段。数学教育在素质教育中具有不可替代的作用 ,它已成为人们在现代社会中生存和发展的基本素质 ,数学教育的重要地位正受到国家和全社会的高度重视。     

“创设问题情境、激发学生数学学习兴趣”的实践与研究

如何激发中职校学生数学学习的兴趣、提高他们的数学学业水平是摆在我们面前的一个亟待解决的问题.而通过创设有意义的数学问题情境,让学生通过问题情境来感知和学习数学知识,这对激发学生学习数学的兴趣,提高他们的数学学业水平有着很大的促进作用.     

“群体互动-自主建构”教学模式及其数学教学着力点

"群体互动-自主建构"教学模式是以知识学习为载体和主线,以"群体互动-自主建构"为基本方式,以培养学生的基本生存能力为目的的课堂生活德育模式.其数学教学着力点有导学、自学、答疑、考试、评价、奖励,它们之间并不是简单的线性逻辑关系,而是相互交织、有机统一于"群体互动-自主建构"中.