As a class we have looked at volcanoes and how volcanoes are formed. We created this using ourselves. We acted as the tectonic plates under the Earth's crust. Some of us acted as the magma and then turned into lava once we have left the Earth's crust. We then showed how along with the lava; ash, minerals, rocks and gases also escape during an eruption.
We then transferred this into our books and noted how an eruption and discussed in depth that is all about the pressure that is formed.