White vinegar
Baking soda
Rice
Clear jar
Water
Food coloring (optional)
Fill the jar 3/4 full with water.
Add food coloring if desired.
Add 1 tablespoon of baking soda and stir. Mix completely.
Add 1/4 cup of uncooked rice.
Add 1-2 tablespoons of white vinegar.
Watch the rice dance!