随着新课改的不断深入,那种依靠增加课时、加大学生作业量,完成教学任务、提高教学质量的做法,显然是不可行的,不利于学生素质的提高.如果要减轻学生的课业负担,则必须以提高课堂教学效率和质量为重点.新课程教学要求效率高、时间短,但不等于弃教学质量于不顾,素质教育不能忽略学生的认知基础.另外,高中化学教学可谓是化学教育的深入阶段,要求学生牢固掌握化学基础知识,培养学生的基本技能和能力,为以后学生参加科学实践和进行更深层次的学习打下坚实 With the continuous deepening of new curriculum reforms, it is obviously infeasible to increase the number of class hours, increase the number of college students, complete the teaching tasks, and improve the quality of teaching. This is not conducive to improving the quality of students. If it is necessary to reduce the student’s academic burden , we must focus on improving the efficiency and quality of classroom teaching. The new curriculum requires high efficiency and short teaching time, but it does not mean that the quality of teaching is ignored. Quality education cannot ignore the cognitive basis of students. In addition, high school chemistry teaching can be described as chemistry. The in-depth stage of education requires students to firmly grasp the basic knowledge of chemistry and develop students’ basic skills and abilities, so as to lay a solid foundation for future students to participate in scientific practice and conduct deeper learning.