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波利亚说过:“解决问题的成功要靠正确的转化,化归思想是指在解决问题的过程中,将那些有待解决或难以解决的问题转化为已经解决或容易解决的问题的一种数学思想方法。”一个问题的解决,可以为相关问题的解决提供思路与方法,但我们在解题时有时会忽略问题之间的内在关联,出现“重搭台,另唱戏”的现象,不经意间浪费了已启动的思维与已获得的资源。本文通过几则教学案例,捕捉可用资源,贯通内在关联,落实“化归”之用。
Polia said: “To solve the problem depends on the correct conversion of success, is to return to the idea of the process of solving problems, those who need to be solved or difficult to solve the problem has been solved or easy to solve a problem Mathematical method of thinking. ”“ The solution of a problem can provide ideas and methods for the solution of related problems. However, sometimes we neglect the inherent relationship between problems when we solve problems, The phenomenon, inadvertently wasting started thinking and resources have been obtained. This article through several teaching cases, to capture the available resources, through internal relations, the implementation of ”return".