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教学目标 (1)掌握密度的概念、公式,知道密度的应用。 (2)掌握用天平、量简测量密度及其他间接测定密度的方法。 (3)学会系统地整理知识,形成良好的认知结构。学会分析解题思路,总结解题规律,提高解题意识。 1.回忆本章所学知识在学生汇报本章知识小结的基础上,教师进一步引导学生认识物质密度的物理涵义、测定方法,以及应用密度知识的几个方面(列表板书略)。 2.例题(出示小黑板或投影,以下同) [例1] 冰的密度是0.9×10~3千克/米~3,读作____,意义是___,如果冰的质量是1.8千克,它的体积是____分米~3。如果这块冰全部熔解
Teaching objectives (1) Master the concept of density, formula, and know the application of density. (2) Mastering the method of using balance, measuring density and other methods of indirectly measuring density. (3) Learn to systematically organize knowledge and form a good cognitive structure. Learn to analyze problem-solving ideas, summarize problem-solving rules, and increase problem-solving awareness. 1. Recalling the knowledge learned in this chapter. Based on the student’s report on the summary of this chapter, the teacher further guides students to understand the physical meaning of material density, measurement methods, and the application of density knowledge in several aspects (listed on the list of books). 2. Example (showing a small blackboard or projection, the same below) [Example 1] The density of ice is 0.9 × 10 ~ 3 kg/m~3, read as ____, the meaning is ___, if the mass of ice is 1.8 kg, Its volume is ____ decimeters ~3. If this ice melts completely