“金属的腐蚀与防护”项目式教学——让银器光亮如新的生活小妙招

Project-Based Teaching of“Corrosion and Protection of Metals”:A Life Tip to Make Silver Shine Like New

以“银器腐蚀与银器复原”为项目学习主题,以真实生活情境为载体,整个项目学习内容包含:化学腐蚀和电化学腐蚀、原电池电动势大小的影响因素、牺牲阳极的阴极保护法、外加电流的阴极保护法等。通过家庭小实验、学生分组探究实验、教师演示实验等多种实验活动,呈现以“项目式学习开展金属的腐蚀与防护”的教学设计思路和教学实践过程。

With“silver corrosion and silver restoration”as the project learning theme and real life situation as the carrier,the whole project learning content includes:chemical corrosion and electrochemical corrosion,factors affecting the size of the electromotive force of the primary battery,cathodic protection method of sacrificial anode,cathodic protection method of impressed current.Through a variety of experimental activities such as family small experiment,student group inquiry experiment,teacher demonstration experiment,etc.,the teaching design idea and teaching practice process of“project-based learning to develop metal corrosion and protection”are presented.