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课堂演示实验是化学课堂教学的重要组成部分,也是化学教师顺利开展课堂教学的重要手段,它不仅可以培养学生的观察能力、分析能力和科学探究精神,而且对帮助学生理解相关化学知识起着极其重要的作用。但用学校实验配备的实验器材来做有些演示实验很难演示成功,或者演示效果不明显,甚至教师在讲台上做实验,坐在后排的学生看不清楚,不置可否,因此,有的教师就干脆把做实验改为讲实验,或用多媒体取而代之,而有些演示实验如果在原来
Classroom demonstration experiment is an important part of chemistry classroom teaching and an important means for chemistry teachers to carry out classroom teaching smoothly. It not only can cultivate students’ observation ability, analysis ability and scientific inquiry spirit, but also plays an extremely important role in helping students to understand related chemical knowledge Important role. However, the experiment equipment provided by the school experiment to do some demonstration experiments is difficult to demonstrate success, or the demonstration effect is not obvious, and even teachers in the podium to experiment, sitting in the rear of the students can not see clearly, do not complain, so some teachers Simply put the experiment to talk about the experiment, or replace it with multimedia, and some demonstration experiments if the original