For the ‘our spherical earth activity’ I would have a classroom discussion centred on where we live. We would discuss what a planet is as well as that fact that it is in the shape of a sphere, these lessons would be done in conjunction with 3D shapes. I would then ask the children to observe a toy boat on a flat surface such as a table moving into the distance. They would then look and imagine what an observer would see if the boat was moving away on a spherical surface while I move the boat away on a globe. We would then do the penguin and polar bear activity whereby they have an imaginary conversation with each other ‘what’s it like living upside down’ while turning the globe upside down and back up depending on whether it is the penguin or polar bear that is speaking. The children would then discuss how gravity pulls everything towards the centre of the earth. We would finish the lesson with the earth mosaics activity and let the children search for up and down and have a classroom discussion.