“数学源于生活,寓于生活,用于生活”。新课改要求教师要充分利用学生已有的生活经验,从生活实际中引出数学问题;并结合生活原型,引导学生探究新知;尽可能使练习设计生活化,使学生加深巩固新知;并在课后延伸中,让学生主动用数学知识解决生活问题。 “Mathematics from life, living in life, for life ”. The new curriculum reform requires teachers to make full use of the students’ existing life experience, leading to mathematical problems from the reality of life; and to guide students to explore new knowledge based on the prototype of life; to make the practice design as living as possible and to enable students to consolidate the new knowledge; After the extension, so that students take the initiative to solve the problem of life with mathematical knowledge.