由于我们常常忽视数学知识的背后支撑,忽视数学内在逻辑的梳理,忽视数学体系的研究,故而让学生在数学世界的面前而徘徊不前。为此我们有必要从学生的生活,寻找数学的支撑;从认知的体系中,寻找数学的逻辑;从数学的发展历史中,寻找数学的轨迹,最终给孩子创设一个敞亮的数学世界。 Because we often neglect the back-up support of mathematical knowledge, ignore the internal logic of mathematics and neglect the research of mathematical system, we can let students stagnated before the mathematical world. Therefore, it is necessary for us to look for the support of mathematics from the life of students, to find the logic of mathematics from the cognition system, to find the trajectory of mathematics from the history of mathematics development and finally to create a bright mathematical world for children.