作业和练习的布置是教学环节中的重要一环。如何科学、合理、有效地布置高中化学作业和练习,减轻学生课业负担,让他们从传统的“题海战术”中解脱出来,又不影响他们对所学知识的巩固,还能激发他们自主学习的积极性,真正让学生对知识达到举一反三的目的,是教师在教学过程中必须面对和思考的问题。 Homework and practice placement is an important part of teaching. How to arrange high school chemistry homework and practice scientifically, rationally and effectively so as to relieve students’ burden on their homework so that they can be freed from the traditional “problem sea tactics” without affecting the consolidation of their knowledge and inspiring them The enthusiasm of independent learning, the real students to knowledge to achieve the goal of giving top priority is that teachers in the teaching process must face and think about the problem.