摘要
在以“Mg+H_(2)O”反应体系为核心的实验探究专题教学活动中,通过变量控制的方法设计实验方案,采用常规实验、数字化实验等方式,多层次探究加速“Mg+H_(2)O”反应速率的原因和控制条件。在有层次的教学活动中递进式发展学生通过变量控制的方法设计实验方案的能力、拓宽对影响化学反应速率因素的认识角度,通过对活动环节的评价,诊断并发展学生的实验探究能力。
In the special teaching activity of experimental inquiry with“Mg+H_(2)O”reaction system as the core,the experimental scheme was designed by variable control method,the reasons and control conditions for accelerating the“Mg+H_(2)O”reaction rate were explored at multiple levels by means of conventional experiments and digital experiments.In hierarchical teaching activities,students’ability to design experimental schemes by variable control method was developed step by step,the understanding angle of factors affecting chemical reaction rate was widened,and students’experimental inquiry ability was diagnosed and developed through the evaluation of activity links.
作者
孙默
郑晓红
SUN Mo;ZHENG Xiao-Hong(Lize Middle School Affiliated to Capital Normal University,Beijing 100071,China)
出处
《化学教育（中英文）》
CAS
北大核心
2022年第13期102-108,共7页
Chinese Journal of Chemical Education
基金
北京市教育学院增值评价视域下的化学学科核心素养评价研究2021专题项目
北京市教育学会十四五教育科研课题“中学生化学实验探究能力增值评价研究”(课题编号:FTYB2021-025)。
关键词
变量控制
实验探究
镁
反应速率
评价
variable control
experimental inquiry
Mg
reaction rate
evaluation
