化学知识具有一定的抽象性,在课堂教学中需要借助实验让学生获取更为直观的认识。在实验操作中学生积极思考,从而获取直接经验,更有利于知识的掌握和应用。当前课堂中化学实验多为演示实验,由教师在讲台操作,学生在下面观察,最后教师再给予解释,即Demonstrate(演示)—Observe(观察)—Explain(解释),简称DOE策略。整个过程学生处于被动接受状态,不熟 Chemical knowledge has a certain degree of abstraction. In the classroom teaching, students need to get more intuitive understanding through experiments. Students in the experimental operation of positive thinking, in order to gain direct experience, more conducive to the mastery and application of knowledge. In the current class of chemistry experiments are mostly demonstration experiments, which are operated by the teacher at the podium and observed by the students below. The teacher finally gives an explanation, that is, Demonstrate -Observe -Explain (referred to as DOE strategy). The entire process of students in a passive state of acceptance, unfamiliar