基于POEC策略的真实问题解决的高中化学教学设计——以“如何科学使用补铁剂”为例

High School Chemistry Teaching Design Based on POEC Strategy for Real Problem Solving——Taking“How to Scientifically Use Iron Supplement”as an Example

基于“老人长期喝浓茶导致缺铁性贫血”的真实情境,采用POEC策略引导学生通过实验探究解决问题,在探究“浓茶水、补铁剂、维生素C”三者之间关系及根本原因的过程中,学会如何科学使用补铁剂。建构运用真实问题解决的一般思路模型,强化转化性质决定用途等化学观念,感受化学学习的目的与价值——解决生活中的实际问题。

Based on the real situation of“Iron-deficiency anemia caused by the elderly drinking strong tea for a long time”,the POEC strategy is used to guide students to explore and solve problems through experiments.In the process of exploring the relationship between“strong tea,iron supplements,vitamin C”,learn how to use iron supplements scientifically,construct and apply the general thinking model of real problem solving,and strengthen the chemical concepts of transformation,nature determines use,etc.Experience the purpose and value of chemistry learning-solving practical problems in life.