《义务教育数学课程标准》指出:“数学的内容是源于学生生活的,适应未来社会生活需要和学生发展需要的内容。课程内容应当成为学生从事观察、实验、猜测、推理与交流的生动的素材。”因此,构建富有现实意义、情感和价值的数学学习内容,已经成为数学教 The Standard of Compulsory Education Mathematics Curriculum states: “The content of mathematics is derived from the life of students and is adapted to the needs of future social life and the needs of students’ development.” The content of the course should be vivid for students to observe, experiment, guess, reason and exchange . "Therefore, the construction of mathematical learning content with realistic meaning, emotion and value has become a