This history lesson will focus on how we got to find out that the earth is round and revolves around the sun as well as round itself.
It all started a long time ago in Italy when a man called Galileo Galilei (1564–1642) became a famous mathematician, physicist and philosopher. He was born in Pizza in Italy and often walked leaning sideways. This is because he had one leg shorter than the other. When he eventually became famous the townsfolk built a tower in his honour and made it lean sideways to look just like him.