I really love some of the amazing activities in the Spherical Earth section. I had never considered explaining that the Earth is spherical by using a model of a boat as they do in the Spherical Earth activity. While I have used toys to do a similar exercise to Up and Down, however I really like the idea of using a polar bear and penguin. I like the fun way they have the animals talking to each other. Humour is always a great way to engage the class and encourage them to remember the lesson. I think the Earth Mosaics are a fantastic idea. I think it is a fantastic, easy way to explain gravity and the spherical nature of the world to young (and old) children. As I teach in a Gaelscoil visual explanations work best in Junior Infants especially in the first term. These activities are very visual and easy to understand for every child.