Experiment with light
Design a poster to show what happens to light as we look in a mirror. What is the light source? What directions does the light travel from the source, to the object, to our eyes?
(Pupils might work scientifically by: looking for patterns in what happens to shadows when the light source moves or the distance between the light source and the object changes.)
Note: Children should be warned that it is not safe to look directly at the Sun, even when wearing dark glasses.