在小学科学教学中,教师不仅要运用实验仪器来帮助学生完成实验探究,了解更多的科学知识,而且还需要借助一些常见的工具来完成教学任务(有时,那些工具还能成为突破教学难点的法宝)。其中,万用表就是一种很好的辅助教学工具。冀教版《科学》教材三年级下册“电”单元第13课“导体和绝缘体”教学中有关于人体、大地、不纯净的水和潮湿的物体是导体还是绝缘体的研究,这是一个不容回避而又难以让学生信服的教学难 In primary science teaching, teachers not only need to use experimental apparatus to help students to complete the experimental exploration, learn more scientific knowledge, but also need to use some common tools to complete the teaching task (sometimes, those tools can become a breakthrough in teaching difficult magic weapon). Among them, the multimeter is a good auxiliary teaching tools. Ji teaching version of “Science” textbook third grade volume “electric” unit Lesson 13 “conductor and insulator” teaching on the human body, the earth, not pure water and wet objects is conductor or insulator research, This is a difficult teaching which can not be avoided but is hard to convince the students