One of the activities I'm working on at the Science Festival is the Dino-Dig. In the covered lane next to the Assembly Rooms a dinosaur has been buried and our task is to help the visiting children dig this up and work out what sort of dinosaur it is. There are other sorts of fossils buried in there too and we'll talk about those and how they were made before helping the children to make plaster casts in the shape of ammonites.
If you are visiting the Science Festival, you'll need to book in advance for the Dino Dig. I think there are still tickets left for some performances but hurry because they'll sell out fast! Also remember to wrap up warm for the Dino Dig, its freezing in there!