在小学数学教学中，“注入式”教学法还是比较普遍的，教师生怕学生不知道，讲了一遍又一遍，总认为课堂上多挤时间讲解，而练习、作业让学生课后去完成，就能使学生获取好成绩。结果往往事倍功半，事与愿违，质检成绩也总是不令人满意．究其原因，笔者进行了一番探讨，认为数 In primary school mathematics teaching, “injected” teaching method is still relatively common, teachers are afraid of students do not know, talked over and over again, always think that the classroom more crowded time to explain, and practice, homework for students to finish after class Enable students to obtain good grades. Results are often less effective, contrary to expectations, quality inspection results are always unsatisfactory. The reason, I made some discussion, that number