《全日制义务教育数学课程标准》在基本理念中提出“学生的数学学习内容应当是现实的、有意义的、富有挑战性的,这些学习内容要有利于学生主动地进行观察、实验、猜测、验证、推理与交流等数学活动。”这一理念就说明我们的数学要源于生活,贴近生活,最后还要回归生活,为生活服务。它是生活的一种浓缩与写照。 “Full-time compulsory education mathematics curriculum standards” put forward in the basic idea of ​​ “students’ mathematics learning content should be realistic, meaningful and challenging, these learning content should be conducive to students take the initiative to observe, experiment, guess , Verification, reasoning and communication, etc. ”This concept shows that our mathematics should come from life, stay close to life, and finally return to life and serve life." It is a concentration and portrayal of life.