1　问题的提出在数学学习中 ,独立探索与相互交流是两个基本的学习方式 .二者密切联系 ,相互补充 ,传递并内化知识及思想信息 .发展理论认为 ,儿童认知发展和社会发展是通过同伴的相互作用和交往实现的 ,而只有经过内部发展进程后才会成为儿童自身的内部财富[1] .可见 ,一个完 1 Problem Proposal In the study of mathematics, independent exploration and mutual communication are two basic learning methods. They are closely linked and supplement each other, and transfer and internalize knowledge and ideological information. The development theory holds that children’s cognitive development and social development It is achieved through the interaction and interaction of peers, and only after the internal development process will it become the child’s own internal wealth[1].