论文部分内容阅读
案例背景:本节课是第四章第6节第二课时,在熔化与凝固之后,在升华与凝华之前,教材编排也体现了这节课的地位:承前启后。在学习了最简单的两种物态变化——熔化和凝固之后,进一步体验物态变化的产生、变化和形成原理,同时也是升华与凝华的铺垫,所以,这节课的地位显得尤其重要。针对学生的实际情况,我认为,本节课适宜以低起点、高落点的思想设计教学过程,通过学生已经了解的有关液化的生活现象、自然景
Case Background: This lesson is the second lesson of Chapter 6, Section 6, after the melting and solidification, before the sublimation and sublimation, textbook arrangement also reflects the status of this lesson: Cheng Kaiqianhou. After studying the simplest two kinds of changes of state - melting and solidification, we can further experience the production, change and formation principle of the change of state, which is also the bedding of sublimation and desublimation. Therefore, the status of this lesson is especially important . In view of the actual situation of students, I think this class is suitable for low starting point, high point of thought design teaching process, through the students have learned about liquefied life phenomena, natural landscape