思考问题如何让学生初步学会“数学地”思维?背景介绍这是小学数学实验教材(北师大版)三年级(上)第五单元“周长”44～45页的内容,主要让学生感知、体验周长。本节课是通过设计蚂蚁的三场比赛,使学生产生矛盾冲突,最后让学生用数学视角来观察、分析这一矛盾的产生,从而找到解决 Thinking questions How to make students initially learn “mathematical” thinking? Background introduction This is the elementary mathematics experimental teaching materials (Beijing Normal University version) third grade (on) the fifth unit “circumference” 44 ~ 45 pages of content, mainly for students to perceive , Experience perimeter. This lesson is through the design of ants three games, so that students have conflicts and conflicts, and finally allow students to use mathematical perspective to observe and analyze the emergence of this contradiction in order to find a solution