clay
vinegar
baking soda
some kind of tray or brownie pan
safety glasses
1. Form clay into a volcano form.
2. Let it dry for 3 to 2 days.
3. Pour 1/2 centimeters of baking soda into the volcano.
4. Put on safety glasses and pour alittle vinegar.
5. Watch it erupt.
From Hannah, age 11, USA