也谈静电场中的自能与相互作用能

以相互作用能为基础阐明静电场中自能与相互作用能之间的联系和区别，总结出带电系统自能和相互作用能的计算方法，并从理论上证明带电体系统的自能永远大于零，而相互作用能却可以为正、为负、为零.     

数学教学中哲学思想的运用

本文通过一些初等数学习题的研究,阐明数学、哲学间深刻关系,辩证法的基本规律在数学解题教学中的应用.     

一段含源电路的欧姆定律与库仑场

文章针对由于电荷堆积形成的库仑场的三种情形，应用一段含源电路的欧姆定律，讨论了闭合电路中两点间的电势差问题。     

从外区罕见词看客家方言的“山话”特性

客家方言特征词中有一类是“外区罕见词”,该类词对内有很强的“一致性”,对外有很大的“排他性”,是客家方言的“代表”。本文深入分析了它们所反映的社会内容 ,发现它们集中体现在“山居”与“山田”上 ,据此揭示了客家方言的“山话”特征。     

测量误差及其有效数字

介绍了标准误差 ,误差传递 ,给出了有效数字的处理方法     

数学教学中观察能力的培养

阐述在数学教学中，如何培养学生的观察能力，通过观察能力的培养，提高学生的解题能力，进而提高学生分析问题和解决问题的能力．     

Fractions as the Coordination of Multiplicatively Related Quantities: A Cross-Sectional Study of Children's Thinking

Although equal sharing problems appear to support the development of fractions as multiplicative structures, very little work has examined how children's informal solutions reflect this possibility. The primary goal of this study was to analyze children's coordination of two quantities (number of people sharing and number of things being shared) in their solutions to equal sharing problems and to see to what extent this coordination was multiplicative. A secondary goal was to document children's solutions for equal sharing problems in which the quantities had a common factor (other than 1). Data consisted of problem-solving interviews with students in 1st, 3rd, 4th, and 5th grades (n=112). We found two major categories of strategies: (a) Parts Quantities strategies and (b) Ratio Quantities strategies. Parts quantities involved children's partitions of continuous units expressed in terms of the number of pieces that would be created. Ratio quantities involved children's creation of associated sets of discrete quantities. Within these strategies, children drew upon a range of relationships among fractions, ratio, multiplication, and division to mentally or physically manipulate quantities of sharers and things to produce exhaustive and equal partitions of the items. Additionally, we observed that problems that included number combinations with common factors elicited a wider range of whole-number knowledge and operations in children's strategies and therefore appeared to support richer interconnections than problems with relatively prime or more basic number combinations.     

研究型野外实习教学的设计与实践

为了全面培养学生的智力和能力，在生态学野外学习教学中，我们开展了研究型的教学实践活动，教学实践证明，研究型的教学实践活动，不仅为学生提供了创新活动的条件和机会，而且能够有效地引导学生掌握学习方法，由于通过集体参与实践教学的全过程，因而在学生的智力和能力培养方面，作用十分明显。     

Education in the Field Influences Children’s Ideas and Interest toward Science

This paper explores the idea of informal science education in scientific field laboratory (The Science Field Centre). The experimental group of pupils (N = 153) was experienced with approximately 5-day lasting field trips and experiments in the Field Centre in Slovakia. After finishing the course, two different research methods were used to discover their interest and ideas toward science. Pupils from the experimental group showed significant differences from those that did not experience education in the Field Centre (control group, N = 365). In comparison to the control group, pupils of the experimental group highly preferred book titles that were related to their program in the Field Centre. There were differences between the drawings of ideal school environment from both pupils groups. In the drawings of the experimental group, we found significantly more items connected with the educational environment of the Field Centre (e.g. laboratory equipment, live animals). We suppose field science education would be one of the most effective ways to increase interest of pupils to study science and to invaluable intrinsic motivation at the expense extrinsic motivation.