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变式,简言之即不改变本质属性而只改变数或形或其组合的形式。变式有多种多样,从直观材料或事例的内容与结构上看,有内容结构完全相同的等价性变式,也有只保留本质属性不变的不完全等价性的变式;从演变过程上看,有从具体模式向抽象模式过渡的一般化变式(反之则为特殊化变式)。变式的过程就是思维的过程,并且是思维灵活性的一种表现。它使抽象的数学更能发挥其应用的广泛性。因此,通过变式的教学,可以培养学生的思维能力和思维品质,提高学习数学的实际水平和学习兴趣。
Variations, in short, that do not change the essential attributes but change only in the form of numbers or shapes or combinations thereof. Variants are varied. From the perspective of content and structure of visual materials or cases, there are equivalent variants with identical contents and structures, and there are some variations of incomplete equivalence that retain only the essential attributes. From evolution In the process, there is a generalized variant of the transition from a concrete model to an abstract model (and vice versa is a specialization variant). Variant process is the process of thinking, and is a manifestation of the flexibility of thinking. It makes abstraction of mathematics to make the most of its application. Therefore, through the teaching of variation, students can develop their thinking ability and thinking quality, improve the practical level of learning mathematics and interest in learning.