一、教学设计化学是一门实验性的学科,化学学科的概念、原理和规则大多数是由实验推导和论证的。化学实验不仅有助于加深对化学概念、原理和规则的理解,也有助于培养学生的科学态度和创新精神。但实验复习课时,教师受多方面因素影响,很难让学生每个实验都进实验室;教师也不可能 First, the teaching design Chemistry is an experimental discipline, the concept of chemistry, principles and rules are mostly derived and demonstrated by the experiment. Chemistry experiments not only help to deepen the understanding of chemistry concepts, principles and rules, but also help to develop students’ scientific attitude and innovative spirit. However, during the review class, teachers are affected by many factors and it is very difficult for the students to enter the laboratory for each experiment. Teachers can not