Rainbow Chips

This trick can be mastered in five minutes or less. Children age ten or older should be able to perform it reliably. A story line is provided in the directions or you can make up your own. You show two plastic "chips" that are blac on all sides. You rub them together and suddenly two bright colors appear. You show the other sides are still - black. Rub them together and they instantly transform into two other colors. You then show that the black has completely disappeared and you now have four colors on the chips - red,, blue, green and yellow. Can easily be carried in a pocket or purse.