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《义务教育数学课程标准(2011年版)》指出:在数学课程中,应当注重发展学生的数感,符号意识、空间观念、几何直观、数据分析观念、运算能力、推理能力和模型思想。其中所谓符号就是针对具体事物对象而抽象出来的一种简略的记号或代号。数字、字母、图形、关系式等构成了数学的符号系统。符号意识主要是指能够理解并且运用符号表示数、数量关系和变化规律;知道使用符号可以进行运算和推理,得到的结论具有一般
Compulsory Education Mathematics Curriculum Standard (2011 Edition) points out: In mathematics curriculum, students should pay attention to the sense of number, symbol consciousness, space concept, geometric intuition, data analysis concept, computing ability, reasoning ability and model thinking. One of the so-called symbol is a simple object or symbol of a specific abstract abstraction mark or code. Numbers, letters, graphics, relationships, etc. form the mathematical symbolic system. Symbolic awareness mainly refers to the ability to understand and use symbolic representation of numbers, relations and changes in the number of rules; know the use of symbols can be calculated and reasoning, the conclusions obtained are generally