【问题背景】近日,笔者听了一节内容是“5的乘法口诀”的课。教学中,教师设计了这样一个环节:在经过适当的引导后,安排学生以学习小组为单位合作编写5的乘法口诀。经过全体学生的共同努力,各个小组都完成了自己的创作。汇报交流开始后,一个小组的汇报中有这样一句口诀:三五一十 [Problem Background] Recently, the author listened to a lesson entitled “Multiplication of 5”. In teaching, teachers designed such a link: After appropriate guidance, students should be arranged to cooperate in the preparation of a group of 5 multiplication recipes. Through the joint efforts of all students, all groups completed their own creations. After the report exchange started, there was a saying in the report of a group: 35 1 10