By Mr Enright In Year 5, Year 5 Pupil Blog This week, Year 5 have spent time in IPC lessons proving that the Earth is a sphere and not flat, as it was believed to be in Ancient times. The children found out that people didn’t know about gravity, and assumed that the flatness was the reason they did not fall off the planet. They also found out that Ancient Egyptians believed that the Earth was a ﬂat platter of clay aﬂoat on a vast sea of water from which the Nile River sprung. The night sky stretched from one side of this ﬂat Earth to the other. The children also wanted to add facts that they found out about the Earth.