小学“九义”数学大纲指出 :“练习是使学生掌握知识 ,形成技能 ,发展能力的重要手段。练习要在课内进行 ,练习的数量要适量。”这与教育部“减负通知”精神是一致的。它们都为教师在设计、安排学生作业练习时指明了方向。针对目前学生作业练习仍存在量多效低的现象 ,笔者提出 The “Nine Meanings” math outline of primary school states: “Exercises are an important means for students to master knowledge, form skills and develop their abilities. Practice should be conducted in-class and the number of exercises should be appropriate.” This is in line with the spirit of the Ministry of Education’s “burden reduction notice” Consistent. They all point the way for teachers to design and arrange for homework assignments. For the current practice of students still exist more and more low-volume phenomenon, the author proposed