在95年中考总复习阶段,县教研室编拟的一道模拟题所对应的电路如图1所示.此图一出现,便引起了我县毕业班物理教师的注意. 该图中电压表的连接画法打破常规,给学生对其连接实质的识别设置了一定的思维障碍.我发现,有许多教师是利用“伸缩变位法”引导学 In the 95th year of the examination, the circuit corresponding to a simulation question compiled by the county teaching and research section is shown in Figure 1. This figure appears, which has attracted the attention of the physics teacher in the graduation class of my county. The connection of the voltmeter in this figure The drawing method breaks the routine and sets a certain thinking barrier for the students to identify the nature of the connection. I have found that many teachers use the “stretching method” to guide learning.