The video 3 is about the world's first writing: NUMBERS. The civilization mentioned in the video are the Sumerians. First they used cones only then they used cones and clay envelopes where they wrote the number of cones it contained and finally they used clay tablets. They stopped using the envelope because it was too complicated. Sumerian mathematicians were now able to keep permanent records of their calculations and these could become more complex than ever before.
The notion of writing was born !
Colyn TIDMAN and Maël BIGNON