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一、背景化学实验教学不仅能引起学生学习化学的兴趣,激发学生学习化学的自觉性和积极性,更重要的是培养学生的观察、分析和思维能力,培养探讨问题的科学方法和科学态度。为此,我设计了“氨的喷泉实验演示实验”及深入研究课,以现代教育理论为指导,充分利用演示实验培养学生的观察能力、思维能力以及探究能力。二、案例描述与分析认识“氨极易溶于水的性质”时,课本上用喷泉实验来形象的诠释,先演示氨气喷泉实验(图1),通过鲜艳的红色、明显的效果、
First, the background of chemical experiment teaching can not only arouse students ’interest in learning chemistry, stimulate students to learn the consciousness and enthusiasm for chemistry, more importantly, to develop students’ ability of observation, analysis and thinking, to develop scientific methods and scientific attitude to explore the issue. To this end, I have designed “A Laboratory Experiment of Ammonia Fountain” and an in-depth research course. Guided by the theory of modern education, I fully utilize the demonstration experiment to develop the students’ observation ability, thinking ability and inquiry ability. Second, the case description and analysis of understanding “ammonia soluble in water ”, the textbook fountain experiment to the interpretation of the image, the first demonstration of ammonia fountain experiment (Figure 1), through the bright red, the obvious effect ,