经查阅我国目前使用最多的几个版本的初中物理教材,发现新课程改革以来有关电和热探究的实验基本上大同小异,其实在新课改之前的人教版教材,电和热部分的实验装置就和现在的差不多,应该说是一直沿用至今,是比较成熟的一套实验装置,无非是课改前为演示实验,课改后有些版本的教材 After examining several junior middle school physics textbooks which are currently used most in our country, it is found that the experiments on electricity and heat exploration since the reform of the new curriculum are basically the same. In fact, before the new curriculum reform, the experimental teaching materials It is almost the same now, it should be said has been in use so far, is a relatively mature set of experimental devices, is nothing more than a demonstration experiment before the curriculum reform, some versions of textbooks