“钢铁电化学腐蚀原理的再认识”项目式教学

Project-Based Teaching Case: Reexploration of the Principle of Electrochemical Corrosion of Steel

以"钢铁电化学腐蚀原理的再认识"为项目,教师用"项目式教学"的方式引导学生深入地认识钢铁电化学腐蚀原理。详细介绍了教师如何确立项目,如何规划项目,如何实施项目。学生在原有金属腐蚀原理的基础上,又学习了氧浓差电池腐蚀,对原电池的原理有了更加深入的理解。根据氧浓差电池腐蚀的特点,学生提炼了一个合理的简易判据来判断氧浓差电池腐蚀。项目结束之后,学生利用思维导图重新构建了金属腐蚀和防护的知识结构。

Under supervision of the teacher, students acquired a deeper understanding through project-based learning entitled "Reexploration of the principle of electrochemical corrosion of steel". This article introduced how teachers have proposed, designed and implemented this project. In addition to typical electrochemical corrosion of metals, students also learned oxygen concentration cell corrosion and found a simple criterion to identify oxygen concentration cell corrosion. After completing the project, students employed mind maps to reconstruct the knowledge network of metal corrosion principles and corrosion prevention methods.