摘要
提出将试验台设计理念融合到实验过程中。通过方案设计,学生对4种滴定方法有了更全面的掌握。采用电位滴定法分析Na 2CO 3和Na 2SO 3混合溶液,对Na 2CO 3的平均测量误差小于4%。设计性实验在锻炼学生设计能力,促进知识结构体系化,激发学习热情和提高学生的语言表达能力方面起到促进作用。
Students’ ability to analyze and solve problems can be developed through researching and designing experiments. The concept of integrating the design of apparatus into the experimental process was proposed. Through conceptual design,students have a more comprehensive understanding of the practice of four titration methods. The potentiometric titration method was adopted to analyze the mixed solutions of Na 2CO 3 and Na 2SO 3,and the average measurement error of Na 2CO 3 was less than 4%. The practice of designing experiments plays an important role in training students’ design ability,promotes the systemization of knowledge structure,stimulates enthusiasm for learning and improves students’ language using skills.
作者
刘敦禹
章蕾
王瑞娟
金晶
LIU Dunyu;ZHANG Lei;WANG Ruijuan;JIN Jing(School of Energy and Power Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China;School of Materials Science and Engineering,Shanghai University,Shanghai 200444,China;Shanghai Boiler Works Co.,Ltd.,Shanghai 200245)
出处
《实验室研究与探索》
CAS
北大核心
2019年第6期157-161,共5页
Research and Exploration In Laboratory
基金
国家自然科学基金项目(51706143)
上海市浦江人才项目(16PJ1407900)
上海高校青年教师培养资助计划(ZZsl15005)
关键词
滴定
设计性试验
PBL教学方法
试验台设计
titration
designed experiments
PBL teaching method
design of experimental apparatus
