Gypsum is a common handicraft material, which is made of flour, water and pigment. Usually used for children's learning and entertainment, children's practical ability and imagination can be cultivated through manipulation, shaping and creation. The main purpose of plasticine is to shape and create on paper or other planes, so it is classified as stationery. Stationery includes all kinds of writing, painting and hand-made tools and materials. As one of them, plasticine is widely used in schools, families and children's playgrounds. So it can be confirmed that plasticine belongs to the category of stationery.