泥、沙、石、水在大自然里随处可见,是儿童最喜欢玩的游戏材料。然而,由于儿童在玩这种游戏沙与枯土比较,认识沙的松散性和材料时易弄脏、弄破、弄湿衣服,极好的渗透性,熟矢日沙的多种用途。常被父母禁止其实,儿童玩泥、 Mud, sand, stone, water in nature can be seen everywhere, is the children’s favorite game of play material. However, since children are playing games of this kind compared with dry earth, sand and dirt are easily recognized when they are loose and material, broken, wet, garbled, permeable and used for many purposes. Often banned by their parents, children play with mud,