连续退位的算理，即各数位上数的变化，历来是教学中的一个难点，很多学生感到费解。常常教师反反复复地讲，学生一遍一遍地听，还是不得要领。秦芳教师设计的教学过程，使连续退位过程变得浅显易懂。教学过程如下：首先，出示应用题：小明有３元钱，买本子用去６角４分，还剩 Continued abdication of the arithmetic, that is, the changes in the number of digits, has always been a difficult teaching, many students feel puzzled. Often teachers often say that students listen again and again, or can not get the essentials. Qin Fang teachers design teaching process, so that the process of continuous abdication became easy to understand. Teaching process is as follows: First of all, produce the application title: Xiao Ming has 3 dollars, buy the book to go with 6 corner 4 minutes, left