学习能力在未来社会是每一个人必备的能力,下面就如何引导同学们利用整体思想来求代数式的值谈谈看法.一、初步感知在化简|a-1|时,我们要先分析,要根据a-1的符号去绝对值符号,所以我们要进行分类讨论:若a-1≥0,即a-1是非负数,则|a-1|=a-1.若a-1<0,即a-1是负数,|a-1|=_____.同学们体会到了什么?看看你们能否解决下面这个问题: Learning ability in the future society is an essential ability for everyone, the following on how to guide students to use the overall idea of ​​algebraic value to talk about the views of a, the initial perception in the simplified | a-1 |, we must first analyze , According to a-1 symbols to the absolute value of the symbol, so we have to discuss the classification: If a-1 ≥ 0, that is, a-1 is non-negative, then | a-1 | = a- 0, that is, a-1 is negative, | a-1 | = _____. What did the students realize? Look at whether you can solve the following problem: