在一个培智班里,由于孩子们的智力受损的程度不同,可以把一个班的学生分为轻、中、重度三个层次。如果在每节培智数学课中学习同一教学内容的话,那么就会出现有的学生“吃不饱”或“吃不了”的现象。如果教师先根据的智力、能力、知识基础、心理倾向等方面的特点科学地把学生分成多个层次,并根据学生的特点拟订出每个层次的教学计划。然后在教学活动中实施分层教学,就可以使全体学生在原有基础上有所进步和提高。 In a Peizhi class, students in a class can be divided into three levels: light, medium and heavy, due to the different levels of their mental retardation. If you learn the same teaching content in each mathematics lesson, then there will be some students “enough to eat ” or “can not eat ” phenomenon. If teachers first scientifically divide students into multiple levels according to the characteristics of intelligence, ability, knowledge base and psychological orientation, and according to the characteristics of students, draw out the teaching plans at each level. Then in the teaching activities of the implementation of hierarchical teaching, we can make all the students on the basis of the original improvement and improvement.