高中化学“氢氧化铝的两性”项目式教学——胃药“氢氧化铝”的工作原理

Project teaching of high school chemistry“Two Properties of Aluminum Hydroxide”:the working principle of gastric medicine“aluminum hydroxide”

以胃药“氢氧化铝”的工作原理为主题,开展高中化学“氢氧化铝的两性”教学。首先,从生活情境展开,对项目任务进行设计,穿插资料收集,再通过实验探究学习知识点。其次,带领学生认识氢氧化铝和酸的反应、和碱的反应,明确氢氧化铝为两性氢氧化物。最后,探究氢氧化铝的制取方法。在教学过程中,教师渗透平衡观、元素观等思想,培养学生设计探究实验、根据证据推理的能力。

With the working principle of gastric medicine“aluminum hydroxide”as the theme,the teaching of“Two Properties of Aluminum Hydroxide”is conducted in high school chemistry.First of all,from the life situation,the project task is designed interspersed with data collection,and then knowledge points are learned through experimental exploration.Secondly,the students are led to understand the reaction of aluminum hydroxide with acid and alkali,and make clear the aluminum hydroxide as an amphotropic hydroxide.Finally,the production method of aluminum hydroxide is explored.In the teaching process,teachers permeate the ideas of balance and elements,and cultivate students’ability to design exploration experiments and reason according to evidence.