Niamh,
I think the ” very own night sky by displaying the creations on the wall.”
is a wonderful way to keep this activity on show.
Some constellations are much larger than others, some have more stars, some are made from brighter stars, some from dimmer, so there is plenty of opportunity for maths talk as the children make their own constellations.
When we take our StarDome out to schools or to large festivals like the Cork Science Carnival, we share constellation images and ask our visitors what shapes they see. Some are “recognisable picture or pattern,” many are not particularly clear. In particular, Leo does not look particularly lion-like. This could make an intriguing next step for the children to consider.