习题教学是将学生应当掌握的教材内容,以问题的形式,通过课堂答问和练习、课外作业和测试等方式进行的教学活动。它是以信息反馈为特征来检查、了解和评价学生的学习质量和水平,并由此达到了解教师的教学效果的目的。习题教学及解题训练是化学教学的重要组成部分,通过习题的教学,将有助于学 Exercises teaching is to teach students what should be mastered teaching materials, in the form of questions, questions and exercises through the classroom, homework and testing methods such as teaching activities. It is characterized by information feedback to check, understand and evaluate the quality and level of student learning, and thus achieve the purpose of understanding the teacher’s teaching effectiveness. Exercises and problem-solving training is an important part of chemistry teaching, through the exercise of exercises, will help learn