When I introduced Augmented Reality to the five year olds they didn't see anything WOW about it at all.
http://moturoa.blogspot.co.nz/2012/04/augmented-reality.html
I think everything is so new to a five year old that they think things have always been like that. Augmented Reailty has been around for their whole lifetime. It is just another thing that you can do at school.