Sidewalk Chalk

Water
Plaster of Paris
Large plastic container for mixing
Small plastic containers for molding
Water base paints (washable Tempera)

Fill mixing container 1/2 full of plaster of Paris and slowly add water. Stir until plaster resembles pudding. Add paint until you achieve the desired color. Pour into molds and let set for about a day or until dry. When dry turn containers upside down, hit on hard surface until chalk pops out and have fun drawing.