You will need:
- 2 containers
- bicarbonate of soda
- red food colouring or edicol dye
- spoons and/or droppers
Add the vinegar to the second container, and mix with the red food colouring:
The children use droppers or spoons to add the vinegar mix to the bicarb soda:
And voila! Frothy, bubbly hot lava:
It was all going swimmingly. Then one little scientist decided to see what would happen if he tipped a whole container of vinegar into the mix:
I wanted to say:
"Noooo! This is not part of the plan! Spoons! Droppers! Not container loads!"
But I bit my tongue. Children want to see what happens. They want to know what they can do to influence things. They are filled with wonder and curiosity about the world around them. They are natural scientists, so who am I to stand in the way of their experimentation?
Of course, the experimenting didn't stop there.
Next they wanted to see what would happen if you added soap:
And then different colours. And then tip it all out on the table for easier access.
And then smoosh it all around in your hands. Any pretence of lava or volcanoes or controlled experiments was now out the window.
And now for their grand finale. What would it feel like if they stepped in it?
(A heartfelt apology to my lovely colleagues who were left with the mess when I
luckily had to rush off to a meeting).