小学数学的习题中,很多都是封闭题,即常规题,这种题条件齐全,答案唯一,这些数学问题都是理想化、格式化的,在学生对基础知识的掌握和培养学生的基本技能方面起着积极的不可估量的作用,它旨在训练学生从模仿到逐步熟练,形成技能,无疑,它的弊端在于禁锢了学生思维,扼杀了学生的创新意识。教材中也有一些条件不充分或者结论不确定的非常规题,我们称之为“开放 In primary school mathematics exercises, many of them are closed questions, that is, regular questions. These questions have complete conditions and the only answer. These mathematical problems are idealized and formatted. Students master basic knowledge and develop students’ basic skills. The aspect plays a positive and immeasurable role. It aims to train students from imitation to gradual proficiency and skill formation. Undoubtedly, its disadvantage lies in imprisoning students’ thinking and killing students’ sense of innovation. There are also some unconventional questions with insufficient conditions or uncertain conclusions. We call it ”open"