作业是教学过程中课堂内外有效结合的媒介,也是学生课堂学习的延伸。高效地完成作业,可以帮助学生巩固对教学内容的理解和印象,帮助学生及时发现学习中存在的漏洞,弥补学习中存在的漏洞,不断提高学生的学习水平。化学是一门实践性学科,更加注重实践性教学。化学教学中的作业主要目的是加深学生对实践理论的理解和掌握,实现化学实践教学和作业的有效结合,对提高学生的学习水平具有重要作用。在高中化学教学中,教师应该充分 Homework is an effective combination of medium inside and outside the classroom teaching process, but also an extension of student learning in the classroom. Efficient homework can help students to consolidate the understanding and impression of teaching content, help students to discover loopholes in learning, make up for loopholes in learning, and improve students’ learning level. Chemistry is a practical discipline, pay more attention to practical teaching. The main purpose of homework in chemistry teaching is to deepen the students ’comprehension and mastery of practice theory and realize the effective combination of chemistry practice teaching and homework, which plays an important role in improving students’ learning ability. In high school chemistry teaching, teachers should be full