Deirdre,
bridge building as a design and make is a lovely way to let the children bring their understanding of materials and forces into play. I’m glad that you think it worth explicitly showing different styles of bridges and I would suggest that you offer a relatively weak material as the bridge surface (paper is good) so that they have to consider how to support it. The child who brings in a plank of wood for a toy truck to move over hasn’t really engaged to the fullest extent in the activity!
You can find the Curious Minds version of Make a Bridge in English and Irish, I’d expect the Irish one will soon be updated.
