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分组分解法是传统教材的教学内容,在现行教材中已经被删减。此内容具有一定的难度,但是在培养学生的观察能力、数学直觉能力上有很好的价值和作用。所以笔者挖掘其教育价值,在探究中学习分组分解法,需要分组分解的多项式是在不断改变,问题是开放的,方法也是开放的,从而来培养学生的数学直觉和悟性。1回顾总结,为探究铺路笔者启发学生回顾目前所学习过的因式分解的方法,为分组分解的顺利学习作准备。学生回答道:
Group decomposition method is the teaching content of traditional materials, in the existing teaching material has been cut down. This content has a certain degree of difficulty, but it has good value and effect in cultivating students’ observation ability and mathematical intuition ability. Therefore, the author digs its educational value, and learns the group decomposition method in the study. The polynomials that need group decomposition are constantly changing, the questions are open and the methods are open, so as to cultivate students’ mathematical intuition and perception. 1 Review Summary, paving the way for the exploration I enlighten students review the factorization method studied so far, in order to prepare for smooth group decomposition learning. Students replied: