所谓分层教学就是根据不同层次的学生之间的差异，进行分层施教、分层练习、分层辅导的一种教学方法。进行分层教学应注意正确处理好以下几种关系。　　一、备课时的“深”与“浅”　　教师在备课时做到既备教材，又备学生。根据学生的认知实际，仔细琢磨知识的“深”与“浅 The so-called stratified teaching is a teaching method that is based on the differences between students at different levels, such as stratified teaching, stratified exercises, and hierarchical counseling. To carry out layered teaching should pay attention to properly handle the following relationships. First, “deep” and “shallow” when preparing lessons. Teachers prepare both teaching materials and students when preparing lessons. According to the cognitive reality of students, carefully study the “deep” and “shallow” knowledge