《新课程标准》强调 ,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 ,这些内容要有利于学生主动地进行观察、实验、猜测、验证、推理与交流等数学活动 .拼图题就是在生动有趣的情境中 ,通过学生的动手操作 ,巩固有关图形的知识 ,积累数学活动经验 ,发展有条理的思 The “New Curriculum Standards” emphasizes that students’ mathematics learning content should be realistic, meaningful, and challenging. These contents should be conducive to the student’s active observation, experimentation, guessing, verification, reasoning, and communication. The puzzle is in a lively and interesting situation. Through the hands-on operation of the students, the knowledge of the graphics is consolidated, the experience of the mathematics activities is accumulated, and the thinking is developed in an organized way.