随着高中招生规模的不断扩大,进入普通高中学习的学生(尤其是西部地区)数学素养参差不齐,对知识的领悟与掌握的能力差距越来越大,而我国现行的高中教育,既要实施素质教育,同时又不能回避学生的升学问题,这给高中数学教学带来一定的难度.在这种形势下,教师如果在教学中仍沿用过 With the continuous enlargement of the enrollment scale of high schools, students entering ordinary high school (especially in the western region) have uneven levels of mathematics literacy, and the gap in the ability to grasp and master knowledge is increasing, while the current high school education in China is not only The implementation of quality education, at the same time, can not avoid the student’s further studies, which brings a certain degree of difficulty to high school mathematics teaching. In this situation, teachers still use it in teaching.