一、当前初中演示实验存在的主要问题由于不少演示实验器材操作不方便、成功率低,因此老师们在演示实验中,演示的现象往往与理论结果相差很大甚至相反,不但不能说明问题反而对学生理解物 First, the main problems of the current junior high school demonstration experiment As many demonstrations of experimental equipment inconvenient to operate, the success rate is low, so the teachers in the demonstration experiment, the phenomenon of demonstration often differ from the theoretical results, or even the opposite, not only can not explain the problem but Understand things to students