由于高等学校的扩招、中专学生就业的困难等 ,我校近年来的入学学生水平逐年下降 ,再加上不断的降分录取 ,学生之间的水平也是参差不齐、相差甚远 ,对教师的教学影响非常大 .如果仍采取过去的教学方法 ,容易形成“好学生”的课堂、“坏学生”的地狱 ,显然不可能达到数学教学的 Due to the enrollment expansion of higher education institutions and the difficulties in employment of technical secondary school students, the school enrollment levels in recent years have been declining year by year, coupled with continuous drop in admissions, the level among students is also uneven, and the difference is far away. The influence of teaching is very large. If you still adopt the teaching methods of the past, it is easy to form a class of “good students” and a hell of “bad students”. Obviously it is impossible to achieve the teaching of mathematics.