从社会控制角度看食品安全问题

近年来频繁发生的食品安全事件引发了人们对于食品安全问题的高度关注,全球化、信息化也使得食品安全成为全世界共同关注的话题。它不仅关系着人们的生命安全与身体健康,还关系着社会秩序的稳定,与政治、经济、社会、文化重要相关。文章试图从社会学的角度出发,以社会控制为切入点,将食品安全问题置于中国社会转型和全球信息社会背景之下进行考察,以期为解决食品安全问题提供思路。     

高中化学新课程课堂教学评价

传统化学课堂教学评价重结果轻过程,重知识技能轻情感、态度与价值观发展,评价形式、评价内容、评价主体单一,教师、学生处于被动地位,它已经无法适应和满足新课程的要求.高中化学新课程课堂教学评价应重视发展、重视过程、重视评价多元化.综合运用多元化的评价方式,充分运用灵活多样的评价方法,以提升教学的有效性,促进学生全面发展和推进教育教学的与时俱进.     

Classroom action research on formative assessment in a context-based chemistry course

Context-based science courses stimulate students to reconstruct the information presented by connecting to their prior knowledge and experiences. However, students need support. Formative assessments inform both teacher and students about students’ knowledge deficiencies and misconceptions and how students can be supported. Research on formative assessments suggests a positive impact on students’ science achievement, although its success depends on how the formative assessment is implemented in class. The aim of this study was to provide insights into the effects of formative assessments on achievement during a context-based chemistry course on lactic acid. In a classroom action research setting, a pre-test/post-test control group design with switching replications was applied. Student achievement was measured in two pre-tests, two post-tests and a retention test. Participants were Grade 9 students from one secondary school in the Netherlands. Repeated-measures analysis showed a significant effect of formative assessments on students’ achievement. During the implementation of the formative assessments, intriguing discussions emerged between students, between students and teacher, and between teachers. Adding formative assessments to context-based approaches reinforces their strength to meet with the current challenges of chemistry education. Formative assessments affect students’ achievement positively and stimulate feedback between students and teacher(s).     

运用“问题教学法”改进结构化学教学

提出“问题教学法”,阐述了“问题教学法”的４个环节,并就“问题教学法”实施的效果和体会等进行了讨论．     

浅议新教材下化学素养的培养

对学生进行化学素养教育,可以扩展他们的眼界,激发他们对科学世界的兴趣和求知欲望,提高他们的注意力、观察能力、记忆力、想象力和语言表达能力.     

学生学习化学兴趣的培养

通过对化学学习兴趣培养过程的思考和对培养学生化学学习兴趣方法的讨论,谈谈学生化学学习兴趣的培养。     

无机化学实验课程内容体系改革与实践的尝试

本文就当前无机化学实验课程体系存在的问题进行了分析，提出了教学改革的思路与对策。     

化学实验:培养学生创新能力的有效途径

文章以具体的中学化学实验内容 ,讨论了如何利用其实验学科特点 ,以化学实验为途径 ,培养学生分析解决问题的能力和创新思维能力。     

物理化学实验CAI课件的研究与实践

介绍了利用Authorware制作物理化学实验多媒体教学软件的设计思想、系统结构和制作过程;阐述了该课件的应用在推进教学方法改革中起到的积极作用和产生的良好效果,以及制作实验教学CAI课件应注意的主要问题。     

分析化学课堂教学中的创新教育

总结了在分析化学课堂教学中进行创新教育的几点经验,并进行了具体的阐述和实例分析。