“用字母表示数”不仅是小学数学代数知识学习的起始课,也是学习方程的基础,在小学阶段的数学学习中具有重要的地位,是大家普遍关注的一节典型课。最近,因学校组织评比优质课,我连续听了七节“用字母表示数”,在感受同课异构精彩之余,也有许多的疑惑和想法。 “Representing numbers with letters” is not only the starting lesson of knowledge algebra in elementary mathematics, but also the basis of learning equation. It plays an important role in the elementary school mathematics learning and is a typical lesson that everyone is generally concerned about. Recently, due to the quality assessment organized by the school, I listened to seven consecutive “alphanumeric characters”. While I was feeling wonderful in the same course, there were many doubts and thoughts.