You will need: One cup of soap flakes, mixing bowl, water, self sealing plastic bags and food coloring.
What you do:
.Soap flakes are placed in the mixing bowl.
.Water is added slowly, while stirring.
.The substance should remain thick.
.The children take turns stirring.
.The mixture is divided into two bowls and a different color is added to each.
.Spoon a small amount of each color in a plastic bag and seal.
.Each child is given a bag.
.Gently rubbing the soapy mixture together, the child observes the two colors blending into a third color.