化学教学离不开实验,实验在教学中发挥着越来越重要的作用。但因条件、设施等因素的影响,学生实验在有的学校开设得很少,演示实验也做得并不多,而且学生在观看教师的演示实验或自己动手做实验时,往往重视的是实验结果,而常忽视实验过程中的一些细节问题,以至于分析问题和解决问题的能力得不到提高。 Chemistry teaching can not be separated from experiment, experiment plays more and more important role in teaching. However, due to the conditions, facilities and other factors, students experiment in some schools opened very little demonstration of the experiment did not do much, and students in the demonstration of teachers or hands-on experiment, the experiment is often valued, the experiment Results, often overlooked some of the details of the experiment process, so that the ability to analyze and solve problems can not be improved.