活动年级:小学六年级活动背景:本课选自我校高年级自编课程。弘桥小学创建于1954年,它伴随着长江大桥的建设而诞生,学校具有丰厚的“桥文化”底蕴。学生在中年级开始已经学习了使用锯床,磨床,钻床等工具,为高年级独立拼装大型桥梁模型打下坚实的基础。活动中学生亲历探究过程,发现问题,大胆设计,动手操作,进而能提高学生的动手 Activity grade: sixth grade elementary activities Background: This class is selected from my school senior grade self-made course. Hongqiao Primary School was founded in 1954, it is accompanied by the construction of the Yangtze River Bridge was born, the school has a rich “bridge culture ” heritage. Students have learned to use tools such as sawing machines, grinding machines and drilling machines since the beginning of middle school to lay a solid foundation for the higher grades to assemble large-scale bridge models independently. Secondary students experienced the process of inquiry, found problems, bold design, hands-on operation, which can improve students’ hands