High quality, superfine plast-it casting powder / scola powder or you could know this as plaster of paris. Simply add water and begin to mould. Decorate freely with acrylic paints or any other embellishments or craft items you wish to use. This plaster is perfect with plastic and rubber moulds. This is great for class as it is non-toxic as well as simple to use. Children love to mould with the outcome of being able to have something they can hold and decorate, then give as a gift or keep for themselves. This brings a great sense ofachievementfor the child as they turn powder into a 3D hard object.