I would begin my lesson by reading the book Aliens love Underpants by Claire Freedman. The illustrations in the book would provide a stimulus for talking about aliens and help when asking the children to describe the aliens.
I would then ask the pupils to draw a picture of an alien, hiding it from their partner. Their partner would then describe their alien and ask the other pupil to draw based on descriptions given. This is integrating both art and literacy.
Coming together as a class, it would be a nice idea to ask the pupils where they would recommend their alien to visit based on their favourite areas in Dublin or indeed Ireland. I would ask the pupils to give reasons for their recommendations, integrating persuasive writing into the lesson. This can be done orally or in written form depending on the level of the class.
Finally, as my class really enjoy using playdoh, I would ask them to create their own alien and share their creations with the class.