What you need
• Water
• A toothpick
• A small rice bowl
• A hole puncher
• Dish washing detergent
• A piece of writing paper

Steps
1. Use the hole-puncher to punch out 4 discs from the writing paper.
2. Fill the rice bowl with water, till it is ¾ full.
3. Place the bowl on a table. When the water in the bowl is still, place the paper discs in the centre of the bowl.
4. Dip one end of the toothpick in dish washing detergent.
5. Touch the water between the paper discs with the end of the toothpick dipped in dish washing detergent.
6. Observe the paper discs carefully.

Describe what you see and explain why it happens that way.
(Adapted from Talking Science)