新编四年级科学下册“电”单元第5课“导体与绝缘体”教学内容的实验安排是:让学生用导线、电池、小灯泡、鱼夹连接如图1所示的电路。在实验时,学生首先将两鱼夹连接,小灯泡发光,证明电路导通无故障。然后依次在两鱼夹之间接入铁丝、铜丝、铝丝、橡皮、布条、塑料等材料。 New fourth grade science under the book “electric ” unit Lesson 5 “conductor and insulator ” experimental content of the experiment is: to allow students to use wires, batteries, light bulbs, fish clips connected circuit shown in Figure 1 . In the experiment, students first connect the two fish clips, small bulbs glow, to prove that the circuit conduction fault-free. Then in turn between the two fish clips access wire, copper, aluminum, rubber, cloth, plastic and other materials.