Materials:
4 eggs 
240 mL boiling water, separated into 40mL parts
1 TBSP Table Salt
1 TBSP Sugar
1 TBSP Baking Soda
1 TBSP Borax
Four 1,000 mL cups 
Mixing Spoons 
Food Colouring 
Egg Carton

Procedure:

1. Crack 4 eggs as close to the top as possible
2. Boil the water and separate into 40mL parts
3. Pour 40mL of  water into each of the egg shells and take out the liner in the egg
4. Pour the separate 40mL of water into each cup
5. Add the table salt, sugar, baking soda, and borax into four different cups 
6. Put two drops of food colouring into separate solutions  
7. Slowly pour the solutions into the eggshell 
8. ​Place into a dark, ventilated area and wait one to two weeks