矩形形状的生活用品比比皆是.而同学们学习矩形时往往忽略它与生活实际的联系,把它当做独立的数学知识来理解,没能充分地挖掘矩形与生活实际的内在联系.加强动手能力的培养,就应该从设计活动入手,把数学问题与动手操作有机地结合起来,在活动中提高动手能力,在探究中感悟数学真谛,在应用数学知识的过程中提高综合能力. Rectangular shape of daily necessities abound.While classmates often neglect its contact with the actual life, as an independent mathematical knowledge to understand, did not fully tap the reality of the relationship between the rectangle and life. , We should start from the design activities, combine the mathematical problems with the hands-on operation organically, improve the practical ability in the activities, realize the true meaning of mathematics in the exploration, and improve the comprehensive ability in the process of applying mathematics knowledge.