Hi Aoife, this is such a lovely idea. I love working with shadows with the pupils in my school too. We recently had lots of fun in our Junior infant classes working with shadows when one of the children used a dinosaur toy to create a shadow and we realised we could make a somewhat life sized dinosaur in the classroom using distance from the light source. We have also played guess the object based on the shadow and on very sunny days we give children chalk to trace each other’s shadows in the yard. It is such a lovely activity and the children really understand how what they learn in the classroom can be transferred to real life as they realise that shadows come and go based on the light source (which can be frustrating if a cloud passes in front of the sun while in the middle of tracing a classmates shadow).