在选修4的“化学反应速率的影响因素”的学习中,重点是运用浓度、温度、压强、催化剂等条件比较反应速率大小的方法及其一般规律。我在上课时进行改进,并增加了部分实验,以培养学生的实验操作能力、观察能力、思考能力和科学素养,提高课堂教学效益。一、增加反应物本身性质对反应速率起主要影响的视频实验 In elective 4 “chemical reaction rate factors ” study, the focus is on the use of concentration, temperature, pressure, catalyst and other conditions to compare the size of the reaction rate and its general laws. When I was in class, I made some improvements and added some experiments to cultivate students’ experimental skills, observation abilities, thinking skills and scientific literacy, and improve the efficiency of classroom teaching. First, increase the nature of the reactants on the reaction rate of the main impact of video experiments