数学源于生活、植根于生活.数学家华罗庚曾经说过:“宇宙之大,粒子之微,火箭之速,化工之巧,地球之变,日用之繁,无处不用数学.”这是对数学与生活的精彩描述.《数学课程标准》明确指出:要重视从学生的生活经验和已有的知识中学习数学和理解数学.因此,在数学教学中,我们要紧密联系学生 Mathematics is rooted in life and rooted in life. The mathematician Hua Luogeng once said: “The universe is big, the particles are tiny, the rockets are fast, the chemistry is clever, the earth is changing, and the daily life is so complicated that there is no place for math. ”This is a wonderful description of mathematics and life. The Mathematics Curriculum Standards clearly states that we must pay attention to learning mathematics and comprehension mathematics from the student’s life experience and existing knowledge. Therefore, in mathematics teaching, we must closely contact students.