化学概念是化学知识的重要组成部分,是学生学好化学的基础与关键.而化学概念之间又存在着一定的变式关系,如对立关系、交叉关系、从属关系、重合关系等.因而,在高中化学概念教学中,教师可运用变式教学法,来引导学生依据化学概念特征,揭示不同概念的本质,加强概念间的联系,从而准确理解,牢固记忆.一、含义揭露,把握概念本质化学概念均是以高度精辟、扼要的语言概括出的,因而,我们在理解化学概念时,需逐字逐句推敲,以把握其中的内涵.在高中化学教学中,教师需引导学生学会注意概念中的关键词语,并加以解剖、研究,以深刻理解与把握化学概念.因而,在变式教学中,教师应多方位、多角度分析,以让学生弄清概念.如未进行一定变式,只讲解化学概念表层意思,那么学生获得的知识则是肤浅、零散的,在具体问题 Chemical concept is an important part of chemical knowledge, which is the basis and key for students to learn chemistry, and there are some variant relations between chemical concepts, such as antagonistic relations, cross-relations, subordinate relations, overlapping relations, etc. Therefore, In high school chemistry concept teaching, teachers can use variant teaching method to guide students to reveal the essence of different concepts according to the concept of chemistry, and strengthen the connection between concepts so as to understand accurately and firmly the memory. Concepts are summarized in a highly incisive and concise language, therefore, when we understand the concept of chemistry, we need to scrutinize it literally to grasp the connotation of it.In high school chemistry teaching, teachers should guide students to learn the key words in the concept , And to dissect and study to understand and grasp the concept of chemistry .Therefore, in the variant teaching, teachers should be multi-directional, multi-angle analysis, so that students understand the concept.If not a certain variant, only to explain the concept of chemistry The surface meaning, then the students get the knowledge is superficial, fragmented, in specific problems