Material preparation: waxed paper, coke bottles, clay, white vinegar, red vinegar, baking powder, paper towels, etc.

1, spread a piece of wax paper.

2. Choose a container that can be fixed.

3. Put the clay around the container and fix it.

4, let stand for an hour to mix white vinegar juice and red vinegar juice.

5. Pour the vinegar juice into the container.

6. Pour a little baking powder and roll it on a paper towel.

7. Insert the paper towel into the mixed solution.

8. Stand back a little, wait for the lava to dissolve, and the volcano will be fine.