在初中数学教学中,变式教学是学生掌握知识的所使用的一种重要方式,根据变式的对象不同,变式教学存在不同的形式。解题变式是以题目的变化为对象的一种变式,它的范畴不仅局限于题设和结论变化,更应包含多种方法运用于同一题目或同一方法运用于不同题目的解决上。一、改变条件,构造相似问题情境所谓改变条件,构造相似问题情境,就是在学生力所能及的范围内,结合教学需要,对题目中条件和结论进行变换,即等价变换或非等价变换,也即对题目中的 In junior high school mathematics teaching, variant teaching is an important method used by students to master knowledge. According to the object of variant, there are different forms of variant teaching. The problem-solving variant is a variant of the subject as its object. Its category is not limited to the title and conclusion changes, but it should include multiple methods applied to the same topic or the same method applied to the solution of different topics. First, changing conditions and constructing similar problem situations The so-called changing conditions and constructing similar situation contexts are to transform the conditions and conclusions of the questions within the scope of the students’ ability and in combination with the teaching needs, ie equivalent transformation or non-equivalent transformation. That is, in the title