I would choose the activity set on the topic of the Planets. I really like the Planets Song and I really like using a song as a stimulus for beginning a lesson. The children always love anything involving music and songs so this is a great way of getting them interested. The Planets – Journey through the Solar System lesson plan gives great ideas for teaching young children about the planets. The Planet game would work really well during PE and would give the children a good overview of the planets as they would need to listen out for names of actual planets. It would also remind them that the sun is in the middle of all the planets and that the planets move around the sun. Following on from the Planet game we would move onto the Planet Dance also done during the PE lesson. To finish off this lesson we would do the Planet spin which will reinforce to the children that all planets revolve around the sun on their own axes. This would be a great way of introducing the theme of the Planets and I would then look into the topic in more detail back in the classroom.