在实施九年义务教育后,所有的小学毕业生都无条件地升入初中学习,由于学生个体差异、初中教材内容的加深、教学要求的提高、学习方法的改变、外界因素的干扰等多方面的原因。学生两极分化的现象特别严重。在数学方面尤为突出。优生在不断减少,后进生在逐渐增多,而且队伍越来越庞大。如果教师不及时引导,定会导致一系列不良后果。所谓的后进生,即是在班上学习较差,进步很慢的学生。他 After nine-year compulsory education, all primary school graduates go to junior high school for unconditional education. Due to the individual differences among students, the contents of junior high school teaching materials, the improvement of teaching requirements, the change of learning methods and the interference of external factors the reason. Pupil polarization is particularly serious. In mathematics is particularly prominent. Eugenics continue to decline, gradually increase in students, and the team is getting larger and larger. If teachers do not guide in a timely manner, will lead to a series of adverse consequences. The so-called backward students, that is, in the class poor learning, progress is very slow students. he