学习素材是学生解决数学问题、获得数学知识、提高数学能力的基本载体,是学生感受数学与生活的密切联系,体验数学价值,形成正确数学观的重要资源。学习素材的选择不仅影响数学学习的兴趣、动机以及对数学抽象与应用过程的理解,还直接影响学习潜能的发挥。因此,教师应努力寻找并精心选择那些现实的、有趣的、与儿童生活背景密切相关的素材,为学生提供从事数学活动的机会,帮助他们在自主探索、合作交流的过程 Learning material is a basic carrier for students to solve math problems, acquire mathematics knowledge and improve mathematics ability. It is an important resource for students to feel the close connection between mathematics and life, experience the mathematical value and form the correct mathematical view. The choice of learning material not only affects the interest of mathematics learning, motivation and understanding of mathematical abstraction and application process, but also directly affect the learning potential. Therefore, teachers should make every effort to find out and carefully select the realistic, interesting materials closely related to the children’s life background, provide students with the opportunity to engage in math activities and help them in their own exploration, cooperation and exchange process