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【背景与目标】世界是物质的、物质是变化的,学生对物质的变化比较熟悉,看到的现象也比较多,许多变化发生于学生的生活实际,这节课物体变形、水的三态变化、燃烧生锈这些常见的现象,背后有哪些科学道理?这些都是我希望学生探究的。本节教学设计具有前瞻性质和铺垫性质。【科学概念】世界是物质构成的,物质的变化有相同和不同之处。一些物质的变化产生新的物质,一些变化没有产生新的物质。【过程和方法】用举例、分析、综合、概括的方法对物质的变化进行比较
Background and Objectives The world is material, material is changing, students are more familiar with changes in material, more phenomena are seen, many changes occur in the students’ actual life, this lesson objects deformation, water tri-state Changes, burning rust these common phenomena, what are the scientific truth behind? These are all I want students to explore. The teaching design in this section is forward looking and bedding. The concept of science The world is made of matter, the material changes are the same and different. Some material changes produce new things, some do not produce new things. [Process and methods] with examples, analysis, synthesis, summarized methods to compare changes in material