Mathematical Modeling in the Primary School: Children's Construction of a Consumer Guide     

Lyn D. English 《Educational Studies in Mathematics》2006,63(3):303-323

This paper examines 6th grade children's local conceptual development and mathematization processes as they worked a comprehensive mathematical modeling problem (creating a consumer guide for deciding the best snack chip) over several class periods. The children and their teachers were participating in a 3-year longitudinal teaching experiment in which sequences of mathematical modeling problems were implemented from the 5th grade (10 years of age) though to the 7th grade. In contrast to traditional problem solving, mathematical modeling requires children to generate and develop their own mathematical ideas and processes, and to form systems of relationships that are generalizable and reusable. Reported here is a detailed analysis of the iterative cycles of development of one group of children as they worked the problem, followed by a summary of the mathematization processes displayed by all groups. Children's critical reflections on their models are also reported. The results show how children can independently develop constructs and processes through meaningful problem solving. Children's development included creating systems for operationally defining constructs; selecting, categorizing, and ranking factors; quantifying quantitative and qualitative data; and transforming quantities.  相似文献   

Tracking Pre-service Teachers’ Changing Conceptions of Good Science Teaching: The Role of Progressive Reflection with the Same Video     

Benny Hin Wai Yung  Siu Ling Wong  Man Wai Cheng  Ching Sum Hui  Derek Hodson 《Research in Science Education》2007,37(3):239-259

A CD-ROM consisting of videos of two lessons by different teachers demonstrating exemplary science teaching was used to elicit, develop and track the changing conceptions of good science teaching of student teachers enrolled for the one-year Postgraduate Diploma in Education (PGDE) at several stages during the programme. It was found that the videos acted as an effective probe to elicit student teachers’ conceptions and had significant impact on those conceptions at different stages of the programme through the provision of teacher models demonstrating exemplary teaching. The experience has extended novice teachers’ awareness of alternative teaching methods and approaches not experienced in their own schooling, broadened their awareness of different classroom situations, provided proof of existence of good practices and prompted them to reflect on their current conceptions of good science teaching. Most importantly, the strategy of asking student teachers to watch the same videos on three separate occasions at different times of the course was recognized by them as a crucial element in facilitating their reflection on their changing conceptions of good science teaching. PGDE is the standard form of pre-service teacher education in Hong Kong. It provides qualified teacher status within Hong Kong. Student teachers enrolled for the PGDE have completed a relevant undergraduate degree.  相似文献   

对教育如何“面向现代化,面向世界,面向未来”的反思     

何祚庥  欧阳光明 《内江师范学院学报》2003,18(5):5-11

当前中国的现实,以及在未来20年内即将出现的态势,引起了我们对教育如何贯彻“三个面向”问题的反思：我们只有清楚地认识到科学和教育在推进中国社会经济腾飞中的决定性作用;全面把握马克思主义有关社会生产力理论的科学内涵,即科学技术和劳动者是决定生产力发展的最主要因素;准确地理解和全面掌握历史唯物主义有关教育的性质、地位及其在社会生活中的重要性,即教育既是上层建筑,又是生产力的双重属性,才能实现教育的“三个面向”。  相似文献   

高中生物探究性实验方式的指导     

江钐 《宁德师专学报(自然科学版)》2007,19(1):90-93

《普通高中生物新课程标准》提出了"倡导探究学习"的理念,把"探究性学习"作为自然科学课程设计和实施中的重要指导思想和教学策略.探究式教学强调学生自主探究.实施探究性实验教学有利于调动学生学习积极性,发展学生思维,培养学生能力.教师要善于进行实验探究方式的指导,充分发挥学生学习的主动性,挖掘学生内在的潜力.  相似文献   

语文新课程的文化建构观   总被引：7，自引：0，他引：7  

曹明海  陈秀春 《课程.教材.教法》2005,(1)

语文新课程已不是作为技术性语言训练的工具而是作为文化主体而存在,它承担的是文化建构的使命。这就要求语文新课程以文化主体的自觉性建构一种生命形态的、过程性的、富有超越品质的文化运行模式,树立语文新课程的文化建构观,即建构语文新课程的生命形态--一种价值取向观;建构语文新课程的过程模式--一种文化过程观;建构语文新课程的超越品质--一种文化反思观。  相似文献   

寻思"余秋雨现象"的两种反差     

严冰 《三明学院学报》2005,22(3):291-295

成功的历史文化散文创作。为余秋雨赢得了苣大的声誉,也使余秋雨将人生定位在民族未来文化建设的“建设者、引渡者和保护人”。通过分析“余秋雨现象”中的两种反差现象,认为相对于成为民族文化“引渡者”的“天之重任”,从为余秋雨赢得极高声誉的历史文化散文作品中所体现的作者生命智慧看,给人以“身腰赢弱”、不堪重任的疑虑。尚需在“坚毅度”方面强化。  相似文献   

数学学习困难学生的元认知特点及教学策略     

潘冬花 《山西广播电视大学学报》2004,9(6):47-48

元认知是个体对自己认识活动的自我意识和自我监控,元认知发展水平是影响学习困难学生的重要因素之一。认真探讨数学学习困难学生的元认知发展特点,提出如何促进数学学习困难学生的元认知发展的教学策略。  相似文献   

教师教学行为创新调查及反思     

王斌 《哈尔滨学院学报》2003,24(12):45-48

教师教学行为创新关系到教学活动的成效和质量，影响到学生创新精神和创新能力的培养。本研究对当前教师教学行为创新状况进行了调查，并在结果分析的基础上提出相应的改进措施。  相似文献   

声波垂直入射在两种介质界面处的反射和透射   总被引：1，自引：0，他引：1  

赵水标 《临沂师范学院学报》2003,25(3):29-31

通过对入射波、反射波和透射波振幅和声压的定量比较，得到了声波垂直入射在分界面处位移和声压的反射系数和透射系数，并对各种情况下的反射波和透射波进行了分析讨论．  相似文献   

我国半个世纪"减负"问题的历史回溯与思考     

谢利民 《集美大学学报(教育科学版》2005,6(3):20-25

新中国成立以来,学生负担与减轻学生负担问题一直是我国基础教育领域中所关注的问题.从新中国成立之初,到改革开放的发展时期,一直到跨入新世纪的今天,回溯我国半个世纪以来所进行的“减负”历程.今天基础教育改革过程中的学生负担问题是个复杂的社会问题;对我国半个世纪“减负”问题的历史回溯与思考,为我们今天正确认识学生的负担问题,提出和实施有效的“减负”应对策略,有着积极的借鉴意义与思考价值.  相似文献