Making cast fossils

As part of our work on rocks in Dragonfly Class, we had a go at making our own fossils.

First, we made a mould by pressing shells or dinosaurs into plasticine and placing the mould into a tray.  The next step was for Mrs Hollis to mix up some Plaster of Paris and pour it into the moulded plasticine (she did this when we were out of the room as it can get a little messy and very warm while it is setting).  Finally, the next day, we were able to ‘excavate’ our fossil by removing the plasticine.  The results are brilliant!