高三化学第二轮复习一般是在每年2、3月份开始,历时两个月左右的时间。经历约半年的第一轮复习,学生比较系统地掌握了化学基础知识,并初步形成了知识体系,但是也暴露出一些问题,如对知识点的掌握还比较零散,解题时不能灵活运用所学知识,思维缺乏敏锐性导致解题速度缓慢,学生疲惫心态加重,主动学习的积极性下降,课堂效率也在下降。第二轮复习是最出效 The second round of junior high school chemistry review is generally started in February and March each year, which lasted two months or so. After about six months of the first round of review, students systematically mastered the basic knowledge of chemistry, and initially formed a knowledge system, but also exposed some problems, such as the knowledge of the points are still fragmented, the problem can not be flexibly applied Learn knowledge, lack of sensitivity of thinking led to slow solution, the mentality of students tired, initiative to learn enthusiasm, classroom efficiency is declining. The second round of review is the most effective