《义务教育数学课程标准》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……有效的数学学习活动不能单独地依赖模仿与记忆,动手实践、自主探索与合作交流是学生学习数学的重要方式,数学学习活动应当是一个生动活泼的、富有个性的过程。”因此,数学课堂教学必须根据学生的身心发展和数学学习的特点,关注学生的个体差异和不同的学习需要,爱护学生的好奇心、求知欲,充分激发学生的主动意识和进取精神, The Compulsory Education Mathematics Curriculum Standard states: “Students’ mathematical learning content should be realistic, meaningful and challenging ... Effective mathematics learning activities can not rely solely on imitation and memory, hands-on practice, self-exploration and Cooperative exchange is an important way for students to learn mathematics, and mathematics learning activities should be a lively and personalized process. ”Therefore, mathematics classroom teaching must be based on students’ physical and mental development and characteristics of mathematics learning, pay attention to individual differences and Different learning needs, love the curiosity of students, curiosity, and fully stimulate the students’ initiative and enterprising spirit,