For each layer of jello:

1. Dissolve one packet of jello in 1 cup boiling water. Stir to dissolve (approximately 2 minutes).
2. Add one cup ice cubes and stir until they are melted (approximately 2 minutes).
3. Add 2 - 3 tablespoons of the jello mixture to each cup.
4. Freeze for 5 - 8 minutes or until set.
5. Repeat the above steps, layering each color of jello until you have all six layers completed.
6. Place cups in the refrigerator for 30 minutes to 1 hour until completely set.