Preschool children’s conceptions of water,molecule, and chemistry before and after participating in a playfully dramatized early childhood education activity

The present study reports an empirical investigation into concept formation of young children. Based on interviews conducted before and after participating in a playfully enacted chemistry lesson at a culture center, it is analyzed how 6-year-old children conceptualize water, molecule, and chemistry. Theoretically, the study is informed by Vygotsky’s cultural-historical perspective on concept formation. The empirical data consist of pre- and post-interviews with children and documentation of their participation in the intermediate activity. This documentation is used in the post-interviews as a mutual ground for talking with the children about what they remember and how they understand the activity they participated in and what the activity intended to illustrate. The results are presented in terms of three inductively generated categories: ‘everyday’, ‘experientially-based’, and ‘generalized experiences’ concepts, respectively. The implications of these findings for early childhood chemistry (science) education are discussed.

     

Towards a truer multicultural science education: how whiteness impacts science education

Cultural Studies of Science Education - The hope for multicultural, culturally competent, and diverse perspectives in science education falls short if theoretical considerations of whiteness are...     

Improving Academic Performance of Sport and Exercise Science Undergraduate Students in Gross Anatomy Using a Near-Peer Teaching Program

Peer and near-peer teaching programs are common in medical undergraduate courses. However, there are no studies that have investigated the effectiveness of a near-peer teaching program on the academic performance of undergraduate students pursuing sport and exercise science coursework. This study was conducted to analyze the effectiveness of such a program for students who participated in a course on the functional anatomy of the locomotor apparatus. A total of 39 student participants were divided into two groups: students in one group voluntarily attended at least one session of a near-peer teaching program, and students in the other group attended no sessions. The final grade (range 0–100%) was recorded and used as an indicator of academic performance. The final grade of students who attended the near-peer teaching program (69.5 ± 16.0%) was 38.7% higher (P = 0.002, d = 1.06) than those who did not (50.1 ± 20.4%). When the academic performance of the same students was evaluated in another course (exercise physiology) that did not offer a near-peer teaching program, there were no significant differences between the groups (students who attended or did not attend the near-peer teaching program). A significant positive association was found between near-peer teaching program frequency and the number of students approved and not approved in the course (P = 0.041). A significant difference (P = 0.001) was found in the attendance at regular classes between the group who participated in the near-peer teaching program (median: 62 hours; IQR [interquartile ranges]: 4.0 hours) and those who did not (median: 58 hours; IQR: 4.0 hours). Gender was not a moderating factor on academic performance or near-peer teaching program attendance. These results highlight the effectiveness of a near-peer teaching program on the academic performance of students from a sport and exercise science degree program while enrolled in an anatomy course. Anat Sci Educ. © 2018 American Association of Anatomists.     

间接分光光度法测定药品中VC含量

利用VC的还原性,将Fe3+定量转化为Fe2+离子,产生的Fe2+与邻菲哆啉形成橘红色络合物,从而间接测定VC的含量。结果表明,络合物在510nm处有最大吸收峰,且显色物的浓度在2.0×10-6-5.0×10-5mol/L范围内与吸光度成正比,其相关系数R为0.9936,检出限为2.0×10-6mol/L,被测定样品的...     

阳光体育下“小群体”教学模式在大学体育教学中的运用研究

文章采用文献资料、问卷调查、专家访谈、实验、数理统计等研究方法,在构建阳光体育下小群体教学模式的基础上加以实验研究。实验结果显示:小群体教学模式能够有效促进学生课外健身的参与度;增进学生的健康水平、有效促进学生团队精神的培养、增进师生友谊等。     

人之卓越的丧失与制造平庸的教育

人之卓越就是实现人之为人的内在要求,在现代条件下,它意味着人要超越低层次的需要,走向高层次的需要,即自我超越。人之卓越不是一种品质,而是实现活动。物质主义造成了卓越的扭曲,官僚体系束缚了对卓越的追求,相对主义带来了自我的封闭,民主政体在某种程度上造成了大众的平庸,这些都是造成人之卓越丧失的现代根源。让学生接受卓越的教育,学过卓越的生活,对他们的卓越表现给予承认,并培养他们苏格拉底式反思的品质是可能的教育出路。     

大学生职业行为训练仿真系统设计

结合教育游戏开发的需求,提出了基于角色扮演游戏的职业行为训练仿真系统的设计方案。系统总体结构设计采用三层式C／S体系结构,功能的实现与开发采用3D游戏引擎。系统从基本职业规范的要求出发,实现在虚拟现实环境中针对学生的职业道德、职业态度和职业形象的行为优化训练。     

A Critical Review of Students’ and Teachers’ Understandings of Nature of Science

Science & Education - There is widespread agreement that an adequate understanding of the nature of science (NOS) is a critical component of scientific literacy and a major goal in science...     

对我国社会科学领域博士后工作的思考

美国博士后工作已经有一百多年的历史,其发展经验表明,社会科学领域需要博士后工作。本文在梳理我国社会科学领域博士后工作的历史、描述发展现状的基础上,重点分析了我国社会科学领域博士后工作中遇到的一些现实问题,如培养方式单一、经费较少、对人才成长的作用没有理工科明显、流动站发展定位不清等。