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一、教材分析1.教材的地位和作用:“内能”在日常生活和生产技术中有着广泛的应用,它科学地反映了大量分子运动的本质,是“分子运动论初步知识”的进一步深化,也是“能”的概念的具体化;它与“电功和电能”、“家庭安全用电知识”、“能源与能量守恒”的学习有着密切的联系.2.知识点:内能的概念、内能与温度的关系、改变物体内能的两种方式.3.教学重点、难点:让学生知道内能的概念和改变物体内能的两种方式是本节教学的重
First, the analysis of teaching materials 1. The status and role of teaching materials: “Internal energy ” has a wide range of applications in daily life and production technology, it scientifically reflects the essence of a large number of molecular movements, “The further deepening of this is also the embodiment of the concept of ”energy“; it is closely related to the study of ”electric power and energy“, ”knowledge about electricity for household safety “, and ”conservation of energy and energy". Links. 2. Knowledge points: the concept of internal energy, the relationship between internal energy and temperature, and the two ways to change the internal energy of an object. 3. Teaching focus and difficulty: Let students know the concept of internal energy and change the internal energy of the object. This method is the weight of teaching in this section