【摘要】 符号是数学的语言,是人们进行表示、计算、推理、交流和解决问题的工具.学习代数的主要目的之一是要使学生懂得符号的意义、会运用符号解决问题.《标准》强调发展学生的符号感,就是要使学生能够从具体情境中抽象出数量关系和变化规律,并用符号来表示;理解符号所代表的数量关系和变化规律;会进行符号间的转换;能选择适当的程序和方法解决用符号所表示的问题.创设问题情境,使学生经历解决问题的过程,对发展学生的符号感十分必要.更多还原

【Abstract】 The mathematical symbols were the language of mathematics. Symbols were also tools for representation, calculation, reasoning, communication and problem-solving. One of the major purposes of school algebra was to enable students to understand the meaning of symbols and to apply symbols to problem-solving. The Standards of Mathematics Curriculum emphasized that mathematics curriculum should develop students’ symbol sense. That was to enable students to recognize quantitative relationships or patterns in the contexts and to represent them in symbols, to understand the relationships or rules represented in symbols, to translate among different modes of representations, to select programs or methods to solve problems. To create contexts and to have students’ experience the problem-solving was very important in developing students’ symbol sense.更多还原