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bian shi lian xi zai chu zhong shu xue jiao xue zhong de ying yong
Author(s): 
Pages: 58-59
Year: Issue:  27
Journal: Instructor

Keyword:  变式练习变式题初中数学教学学生习题知识技能一题多变多题归一典型问题条件;
Abstract: <正>例题的层次安排,在数学教学中,在一定程度上影响着教学效果,特别是想要达到有机串联的境界的话,主要呈现形式是变式,对某种基本知识技能、典型问题、思维模式等,在保持其本质特征不变的情况下,使非本质属性发生变化,或变更问题的情境,或改变问题的条件,或改变问题的结论,或改变思维的角度、方式,这样的变化过程叫变式。一般做法是从一个题出发,通过变化条件、结论等得到新的题,
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