As an activity I would use the story ‘How to catch a star’ by Oliver Jeffers in the infant classroom.
Before I introduce the story I would ask the children if they have even seen a star. What does a star look like? When can we see them? Can we touch them etc. I allow for plenty of discussion. I would then read them the story again allowing for discussion at the end. In the story the boy finally catches his star so I tell the children we are going to make our own stars.
Using clay and star shapes the children will cut out stars and once dry decorate them to their liking.
As a follow on from this having looked at images of the plough and carrying out some fun tracing activities the children in small groups can re create it using their own individual stars. They can place them on large sheets of card placed on the ground and trace around them to re create the image.