促进知识素养化的教学——以“硝酸的性质”为例

Teaching of“Properties of Nitric Acid”to Promote Transformation of Knowledge to Literacy

以"铜制品抛光液"为情境素材,设计一系列的情境问题,旨在探究浓度、温度、酸度等因素对硝酸强氧化性的影响、硝酸的不稳定性及硝酸的贮输等核心内容。开展以化学实验为主的多种探究活动,学生在问题解决和探究过程中结构化"硝酸的性质"知识,利用结构化的知识评价铜制品抛光液的优缺点,并对此种抛光液提出合理的改进方案,促使知识素养化,落实学生的化学学科核心素养。

A series of situational questions were designed based on"polishing solution for copper products",with the aim of exploring how concentration,temperature and acidity affect the strong oxidation of nitric acid,the instability of nitric acid as well as the storage and transportation of nitric acid.Students are expected to promote the knowledge accomplishment and implement the core literacy of chemistry via carrying out a variety of inquiry activities focusing on chemical experiments,through which students structure the knowledge of"the nature of nitric acid",exploit the structured knowledge to evaluate the advantages and disadvantages of copper polishing solution,and put forward reasonable improvement plans for this polishing solution.