[设计背景]水是人类宝贵的自然资源,与人类生活息息相关,但很多人认为水是“取之不尽,用之不竭”的,所以不知道爱惜而浪费。让三年级学生从封闭的课堂走进生活,走向社会,利用所学统计知识分析水与人类生存的关系及节约用水的重要性,从小养成勤俭节约的优良品质,培养学生的社会? [Design Background] Water is a precious natural resource of mankind and is closely related to human life. However, many people think that water is “inexhaustible” and therefore do not know how to cherish and waste it. Third grade students from closed classroom into the life, to the community, the use of statistical knowledge learned from the analysis of the relationship between water and human existence and the importance of water conservation, from childhood to develop good quality and thrifty, and develop students’ society?