Eruptions in Ash Class!!

Ash Class watched Andy’s Dinosaur Adventures and learnt that during the time of the Tyrannosaurus Rex there were lots more volcanoes on Earth. The children used bicarbonate of soda, vinegar and red food colouring to create a volcano. They really enjoyed watching the eruption outside. The children have also found out that pumice, volcanic rock, floats. What not investigate different types of rocks at home?