First we took the bag of mixture and put it in a bowl and mixed it with our hands. We put a pipe on the tray and put the paper mache and covered up the pipe so you couldn't see it in a volcano shape. We made little trails down the side of the model for lava to flow down. After a week it was dry.
Then we got the powder and mixed it with vinegar and poured it in to the volcano model with a spoon. It made a small eruption. We weren't very happy with that so we poured the rest of the bag in and that worked for quite a long time. We just had to keep pouring the vinegar in. Next we put baking soda and fairy liquid in. We poured the vinegar in and it was much better.
The lava flowed really that time.
We learned that magma and lava are molten rock and act like liquid when they are really hot.