从具体的数字过渡到字母 ,并且能熟练地用字母代替数 ,既是搞好中小学数学教学衔接的关键 ,也是学生学好代数的基础 ,因此 ,及时地帮助学生学习好用字母表示数 ,使学生有效地通过字母关 ,将对学生自然地过渡到中学数学课程的学习具有积极的促进作用。怎样帮助学生过好字母关 , The transition from concrete numbers to letters and the ability to skillfully use letters instead of numbers are both the key to doing well in the convergence of mathematics teaching in primary and secondary schools and the basis for students to learn algebra. Therefore, they help students learn to use letters to represent numbers in a timely manner to enable students to learn. Effectively through the letters, it will have a positive effect on students’ natural transition to the learning of middle school mathematics courses. How to help students with good letters,