当我们从小学启蒙开始，一学数学便和数字打起了交道。现在进入中学，学习代数，还要接触许多新的数学符号。这些数字和符号结构十分合理，用起来十分方便，就像天生的一样。其实，数字和数学符号，是人类文明的一部分，那是人类祖先自己创造的。在学习初中数学之前，大体... When we start from primary school, mathematics and a number of schools will play a deal. Now enter high school, learn algebra, but also exposed many new mathematical symbols. These numbers and symbolic structures are very reasonable and easy to use, just as they are born. In fact, the symbols of numbers and mathematics are part of human civilization created by human ancestry themselves. Before learning junior high school math, in general ...