活动目标 :１ 通过活动 ,使学生加深对长方形、正方形、三角形、圆以及长方体、正方体、圆柱等的认识 ,初步认识这些形体的一些特征 ,培养学生的空间观念。２ 通过活动 ,培养学生动手操作的能力、想像能力 ,以及相互之间的合作精神 ,渗透美育教育。３ 通过活动 ,初步培养学生的 Objectives: 1. Through activities, students should be able to deepen their understanding of rectangles, squares, triangles, circles, cuboids, cuboids, columns, and so on. They should initially recognize some of the features of these forms and develop students' concepts of space. 2 Through the activities, training students ability to operate, imagination, and the spirit of cooperation between the infiltration of aesthetic education. 3 through activities, the initial training of students