从“鸡兔同笼”问题谈假设策略的教学

Discussion on the Teaching of Hypothesis Strategy with the Problem of "Rooster and Rabbit in the Same Cage" as an Example

本文以教学"鸡兔同笼"问题为例,引导学生在简单的实际问题中体会假设策略的存在,初步学会运用假设的策略分析数量关系,并在反思提炼过程中体验策略,感受策略的作用与价值,逐步形成一定的策略意识,探究"学会策略、体验策略、形成策略"的一般过程和基本思路以及进行假设策略教学时需要注意的问题。

With the teaching of ＂Rooster and Rabbit in the Same Cage＂ as an example,this paper attempts to guide students to experience the existence of hypothesis strategy in simple practical problems and preliminarily learn to analyze numeral relationships by utilizing hypothesis strategy which will help them to form certain strategical concepts.This paper also interprets the problems should be paid attention to in the teaching of hypothesis strategy.