《数学课程标准》指出:“创设与学生生活环境,知识背景密切相关的、又是学生感兴趣的学习环境,让学生在观察、操作、猜测、交流、反思等活动中逐步体会数学知识的产生、形成和发展的过程;获取积极的情感体验;感觉数学的力量,同时掌握必要的基础知识和基本技能”。故此,在教学中教师要密切联系学生的生活实际,从学生熟悉的生活情景和感兴趣的事物出发,创设生活情境,为他们提供观察、操作、实践的机会,培养学生自 The standard of mathematics curriculum states: “Creating a learning environment closely related to students’ living environment and knowledge background is also a learning environment that students are interested in, enabling students to gradually understand math knowledge in the activities of observation, operation, speculation, communication and reflection Generation, formation and development of the process; access to a positive emotional experience; feel the power of mathematics, while mastering the necessary basic knowledge and basic skills ”. Therefore, in teaching, teachers should make close contact with the actual life of students, starting from the students ’familiar life scenes and interesting things, creating life situations, providing them opportunities of observation, operation and practice, and cultivating students’ self