A Qualitative Research on Example Generation Capabilities of University Students

Examples which are used in exploring a procedure or comprehending/concretizing a mathematical concept are powerful teaching tools. Generating examples other than conventional ones is both a means for research and a pedagogical method. The aim of this study is to determine the transition process between example generation strategies, and the factors affecting success of the students in generating examples in a Real Analysis course. The participants of the study consisted of 27 undergraduate mathematics students. At the end of the study, it was observed that some of the participants used especially the trial and error strategy as an effective step in the transition to the transformation strategy. Definitions were used by participants as a trigger for example generation and to reflect on concepts during this process in order to reduce cognitive demand.     

我国体育产业可持续发展的实现途径

我国体育的产业化进程尚处于起步阶段,与世界先进水平有较大差距。在对我国体育产业的发展现状和影响体育产业化的因素进行分析的基础上,提出加快我国体育产业化进程、实现体育产业可持续发展的主要途径是:构建多元化投资体制,加大投资力度;制定灵活的营销策略,引导体育消费;完善市场运作机制,促进产业发展;确定科学的产业政策,加强宏观调控;加强体育法制建设,规范市场行为。     

中等职业教育与高等职业教育衔接模式的构建

中高职教育的衔接必须在构建完善的职教体系这个大背景下来考虑，建立以全面素质为基础，综合职业能力为主线，职业资格证书制度为依托的模式。构建与实施该模式应规范高职入口标准；按照中高职贯通的教学模块体系实施教学；以职业能力等级反映不同层次职业教育的教学要求；以选课制作为实现衔接的手段。     

河北省旅游信息化建设现状与发展构想

旅游信息化建设是21世纪旅游业发展的内在要求和必由之路.在对河北省旅游信息化建设现状进行归纳分析的基础上,就其未来发展的目标和框架、重点推进内容、实施步骤等予以构想,并提出了5点建议.     

红强二甲基亚砜搽剂治疗慢性湿疹60例疗效观察

目的:观察红强二甲基亚砜搽剂治疗慢性湿疹的临床疗效及安全性。方法:治疗组60例外用红强二甲基亚砜搽剂,对照组60例外用舒肤特搽剂,每天2次,疗程3周。于疗程结束后记录疗效及副作用。结果:治疗组总有效率为90%,对照组总有效率为75%,经统计学处理有显著性差异,两组局部刺激反应发生率无显著性差异,但复发率有显著性差异。结论:红强二甲基亚砜治疗慢性湿疹比舒肤特更为有效。     

高职高专数学项目化教学促进学生职业能力的提升

随着高职高专课程改革的深入,项目化教学的推进,高等数学项目化教学成为必然的选择,文章探讨了以培养能力为核心的高等数学项目化教学,如何通过培养学生运用数学知识解决实际问题的能力,提升学生的职业综合能力。     

Children's Competencies in Process Skills in Kindergarten and Their Impact on Academic Achievement in Third Grade

Research Findings: The purpose of this study was to investigate the factorial structure of kindergarten children's mathematics and science process skills and the impact of children's competencies in process skills on their performance on mathematics and science achievement tests in 3rd grade. A subset of the Early Childhood Longitudinal Study–Kindergarten cohort data set (n = 8,731) was analyzed using multilevel structural equation modeling. Results demonstrated that science and mathematics process skills were highly related at the construct level but not at the indicator level, as was anticipated. Kindergarten children's competency in mathematics process skills was a strong predictor of their performance on science and mathematics achievement tests in the 3rd grade. However, children's competency in science process skills was only a significant predictor of their performance on a science achievement test in the 3rd grade. Moreover, socioeconomic status and gender were statistically significant predictors of process skills and performance on achievement tests. Practice or Policy: The findings of the present study suggest that the development of children's science and mathematics process skills should be supported utilizing integrated inquiry-based science and mathematics activities to help children recognize the connection between mathematics and science and to contribute to their science and mathematics achievement in later grades.     

具免疫时滞的HIV感染系统的稳定性及Hopf分支分析

考虑了具免疫时滞的HIV病毒模型,分析了未感染平衡点的全局渐近稳定性,给出了感染无免疫平衡点和感染免疫平衡点局部渐近稳定的充分条件,并讨论了感染免疫平衡点附近存在Hopf分支的充分条件.最后,通过数值模拟验证了所得结论.     

Upper High School Students’ Understanding of Electromagnetism

Although electromagnetism is an important component of upper secondary school physics syllabuses in many countries, there has been relatively little research on students’ understanding of the topic. A written test consisting of 16 diagnostic questions was developed and used to survey the understanding of electromagnetism of upper secondary school students in Turkey (n = 120) and England (n = 152). A separate test consisting of 10 questions on the visualization of spatial rotation was used to investigate the hypothesis that students’ ability to visualize three‐dimensional situations from two‐dimensional representations might influence learning of electromagnetism. Many students’ responses showed misunderstandings and inconsistencies that suggested they did not have a coherent framework of ideas about electromagnetism. Common errors included confusing electric and magnetic field effects, seeing field lines as indicating a “flow”, using cause–effect reasoning in situations where it does not apply, and dealing with effects associated with the rate of change of a variable. Performance on the spatial rotation test was, however, only weakly correlated with performance on the electromagnetism questions. The findings suggest the need to develop teaching strategies that help students to visualize magnetic field patterns and effects, and assist them in integrating ideas into a more coherent framework.     

浅谈高职高专学校《现代教育技术》校本教材编写思路

长期以来,我国的课程运转模式一直采取的是自上而下的形式,传统的教学研究制度主要是以课程实施的忠实取向为生成背景,教师成了国家课程意志忠实而被动的执行者。教师教研主体地位的缺失,使自由创造精神受到抑制。新形势下以校为本,开发出适合于自己学校特色的校本教材就显得尤为重要。