Materials: Water Color or tempera paints, brushes, water, plaster of Paris, pie tin or paper plate, stick for stirring.
Process: Fresco Means to paint with water based paint on wet plaster. The paint permeates the plaster and becomes a part of the plaster. Fresco means “fresh,” referring to the wet plaster.
Source: Good Earth Art: Environmental Art for Kids (Authors: MaryAnn Kohl and Cindy Gainer)