I would use all the activity sets as they are all fantastic resources and ideas. I particularly loved the idea about the Earth mosaic and how it gave children a visual model to understand the spherical shape of the earth and how gravity works in order for us not to fall off it. This is done in a very child appropriate way that is fun and interactive. The children in my class group love art and they would engage in the Mosaic lesson as it incorporates it. I think the Youtube videos also give children a sense of the reality of apace, in particular the walk on the moon. This could also be linked to History lessons, Drama, singing – learning the names of the planets, art and writing. It can also be linked to reading stories about space. A fiction story for infants that I would highly recommend to gain interest is Whatever Next by Jill Murphy and a non-fiction junior book I would recommend is Star Stuff – Carl Sagan and the mysteries of the Cosmos by Stphanie Roth Sission.