The nursery children conducted a very messy science experiment today. They learnt that mixing some substances together can cause an irreversible change that creates a new substance. They also learnt that some things cannot be changed back to its original form. They used flour and water, and mixed them together. They were very clever and used lots of adjectives to describe the mixture. Somebody said it felt like a ‘slimy swamp!’ Well done nursery! Gwaith da!