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改验证性实验为探索式实验 ,这种教学模式不仅可以激发学生的学习兴趣 ,而且有利于学生操作能力、设计能力和思维创造能力等各方面的培养和提高。我校对“观察根对矿质元素离子的交换吸附现象”这一实验作如下设计 ,取得了事半功倍的教学效果。1 目的通过学生亲自探索实验 ,让
The verification experiment is an exploratory experiment. This teaching mode not only stimulates students’ interest in learning, but also facilitates the cultivation and improvement of students’ operational ability, design ability and thinking creativity. Our school has designed the experiment of “observing the exchange and adsorption of mineral element ions on roots” as the following design, and achieved a more effective teaching effect. 1 purpose to explore experiments by students themselves