论文部分内容阅读
一、巧做实验学生学习的兴趣是构成学生学习动机最有实际意义的心理成分,而化学实验则是产生学习兴趣的源泉。因此,新课开始运用一些有趣的、带有启发性的实验是吸引学生注意力的有效方法。如讲《化学肥料》一节,新课开始演示“空杯生烟”实验,学生很快被这一奇妙的现象吸引住了,注意力全部集中到实验上来,教师乘势引出氯化铵,并让学生写出氯化铵的电离方程式,指出NH_4~+对植物生长有利,从而把学生的注意引到新课上来。
First, the clever experiment Students interest in learning is to form the most practical psychological motivation for student motivation, and chemical experiments are the source of interest in learning. Therefore, the introduction of some interesting and illuminating experiments in the new class is an effective way to attract students' attention. As for the section on “Chemical Fertilizer”, the new class started to demonstrate the experiment of “empty glass smoking”. Students were quickly attracted by this wonderful phenomenon. All the attentions were concentrated on the experiment. The teacher led the momentum to introduce ammonium chloride and Have students write down the ionization equation for ammonium chloride, pointing out that NH4 + is beneficial to plant growth, drawing students' attention to the new lesson.