《小学数学课程标准》指出:“不仅要使学生获得必需的数学基础知识和基本技能,而且要使学生的能力和思维方法得到改善,同时要使学生的道德情感、价值观念、个性品质等得到健康的发展。”其中基础知识和基本技能不仅是学生今后学习的必要准备,而且是其适应现代生活和未来发展的基础。因此,作为巩固知识、熟练技能的练习,必须增强目标的明确性,要对知识理解的标准情境和变式情境做到心中有数;要对知识掌握的深浅度以及与已有知识的贯通与联系,作出预先的考虑与估计;要对知识运用的熟练程度作出精心安排和把握,对解决这些问题的对策也应该做到事先有独到的考虑。最忌无的放矢,为练习而练习,甚至炮制“题海”。 “Elementary Mathematics Curriculum Standard” states: “Not only should students acquire the necessary basic knowledge of mathematics and basic skills, but also improve their abilities and thinking methods. At the same time, they should make students’ moral feelings, values, personality and character Get healthy development. ”“ The basic knowledge and basic skills are not only the necessary preparation for students to learn from now on, but also the basis for their adaptation to modern life and future development. Therefore, as an exercise to consolidate knowledge and proficiency in skills, we must enhance the clarity of goals, and have a clear idea of ​​the standard and variant situations of knowledge understanding. It is necessary to grasp the depth of knowledge as well as the connection and connection with existing knowledge , Making advance consideration and estimation. To make a careful arrangement and grasping of the proficiency of using knowledge, countermeasures to solve these problems should also be given prior consideration. The most avoidable aimless, practice and practice, and even concocted ”title sea".