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How to make a plasticine volcano
Choose the plasticine.
You'll need brown plasticine for the bulk of the volcano, white plasticine for the snow cap and red or orange plasticine for the lava. If you want a green landscape around the base of the volcano, you'll also need some green plasticine.
Make a construction paper or thin cardboard base for shaping the volcano. You'll need a basic cone shape for the volcano, so make a basic cone with a large opening from either construction paper or thin cardboard.