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初中物理第一册《蒸发》一节中的《蒸发吸热》是本节教学中的重要内容,在教学的过程中。尽管教师采用多方面的举例方式讲授,但是学生总是“百闻不如一见”。为了提高学生对“吸热”的感性认识,加深理解,激发兴趣,我在教学中制作了一个利用“蒸发吸热”把水变成冰块的演示实验,获得了非常满意的效果。
The “evaporation and heat absorption” in the section of Evaporation in the first volume of junior high school physics is an important part of teaching in this section, during the teaching process. Although teachers use a variety of examples to teach, but students are always “better known”. In order to improve students’ perceptual understanding of “endothermic”, deepen understanding, and stimulate interest, I created a demonstration experiment using “evaporation and heat absorption” to turn water into ice. I was very satisfied with this. effect.