一教材解析本课选自苏科版《综合实践活动——劳动与技术》(四年级下册)技术初步单元。涤纶彩球制作是本单元的第二个项目活动。二教学目标认识涤纶薄膜材料的性能,掌握涤纶彩球的制作方法,合作完成一个彩球,提高学生的审美意识、质量意识;提升学生运用涤纶材料制作不同作品的能力,激发学生参与技术活动的兴趣,培养初步的技术意识,提高合作交流的能力; A textbook analysis This class is selected from the Suke version of “comprehensive practical activities - labor and technology” (fourth grade second volume) technical preliminary unit. Polyester ball production is the second project activity of this unit. 2. Teaching Objectives To understand the performance of polyester film materials, to master the production methods of polyester colored balls, cooperate to complete a colored ball to enhance students ’aesthetic awareness and quality awareness; to enhance students’ ability to make different works of polyester materials to stimulate student participation in technical activities Interest, develop initial technical awareness, improve the ability of cooperation and exchange;