“学贵知疑”。发展思维是与质疑直接联系的,有所疑才有所思,有所思才有所得。因此,数学教学要努力创建有利于学生主动探索的教学环境,教师应依据教材内容,抓住小学生好奇心强的心理特点,精心设疑,制造悬念,把一些数学知识蒙上一层神秘的色彩,使学生处于一种“心求通而未达,口欲言而未能”的不平衡状态,引起学生的 “Learn your knowledge ”. Development of thinking is directly linked to questioning, there are doubts before thinking, thoughtful income. Therefore, mathematics teaching should strive to create a conducive teaching environment for students to take the initiative to explore, teachers should be based on the content of teaching materials, grasp the psychological characteristics of primary school curiosity, carefully set suspicions, create suspense, the mathematical knowledge of a number of mysterious colors , So that students in a kind of “heart but not up to heart, unable to speak their mouth,” the imbalance, causing the students