笔者在多年的组织、指导学生的实验中，注意抓了以下几点。１抓实验常规要求的训练“无规矩不成方圆”。每组织一堂实验课都要向学生宣布必要的纪律，特别是起始年级的第一堂实验课，要着重强调要求做到“三要三不要”：不要喧哗，不要随意走动，不要乱丢纸屑和随地吐痰。... In the years of organizing and guiding student experiments, the author paid attention to the following points. 1 Grasping the training required by the experiment routines, “No rules become a rule”. Each laboratory class should announce the necessary disciplines to students, especially the first experimental class in the initial grade. Emphasis must be placed on the requirement of “three to three unnecessarys”: Do not be embarrassed, do not walk freely, and do not throw paper away Chips and spitting. ...