化学课堂教学是一个整体,有效的课堂教学需要有效设计策略。导入课是课堂教学过程的第一个环节,是引领学生进入课堂的第一步。精心设计的课堂导入,不仅能展示新课研究的主题,更能激发学习动机和兴趣,使学生在很短的时间内迅速地集中精力,从心理和知识上进入听课的良好准备状态,进而 Chemistry classroom teaching is a whole, effective classroom teaching requires effective design strategy. The introduction of lessons is the first step in the classroom teaching process and is the first step toward leading students into the classroom. Well-designed classroom introduction can not only demonstrate the theme of the new class of research, but also stimulate motivation and interest in learning so that students can quickly concentrate on psychology and knowledge in a very short period of time to prepare for lectures, and thus