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(本课选自人教版义务教育课程标准实验教科书《化学》八年级全一册第六单元课题3。)教材分析:本节课是在了解氧气知识的基础上,对气体性质实验探究过程的巩固和加深,同时又要为之后的燃烧与灭火知识打基础、做铺垫,是本单元内容的核心和纽带。本节知识总体难度不大,教师的主要任务是引导学生将认识从感性上升到理性,利用学到的化学知识理解和解释相关的化学问题,培养学生科学素养和探究精神,提高学生运用所学知识解决实际问题的能力。
(This lesson is taken from the People’s Education Edition Compulsory Education Curriculum Standard Experimental Textbook “Chemistry” eighth volume of the sixth unit topic 3.) Textbook Analysis: This lesson is based on knowledge of oxygen, the gas nature of the experimental exploration process Consolidate and deepen, but also to lay the foundation for future knowledge of combustion and fire fighting, paving the way, is the core and link of the unit content. The overall knowledge of this section is not very difficult. The main task of teachers is to guide students to raise their awareness from sensibility to rationality, to use the learned knowledge to understand and explain related chemical problems, to develop students ’scientific literacy and exploration spirit and to enhance students’ use of what they have learned Knowledge The ability to solve practical problems.