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优质的数学教育,要培养和发展学生的符号感,而用字母表示数是符号感的核心内容.这是因为用字母表示数,不仅具有简明性,而且具有一般性.它能够促进数学问题的
High-quality mathematics education should cultivate and develop students’ sense of symbol, and using letters to represent numbers is the core of the sense of symbols. This is because using letters to represent numbers is not only concise but also general. It can promote mathematical problems.