The "Enneas" This book revives approximately two

This book revives approximately two hundred exceptional ancient Greek inventions (from the robot - servant of Philon to the cinema of Heron and from the automatic clock of Ktesibios to the analog computer of Antikythera) and aims to demonstrate that the technology of the ancient Greeks

nuts and acorns

The vertical line is used to divide numbers into positive (right side) and negative (left side)

152 if all symmetrical (by rotation

This is a simple strategy game that had been spread throughout the ancient world and has still followers up today (is similar to the tic- tac- toe)

The "Enneas" This book revives approximately twoIt is a variant of trias that made its appearance during the Hellenistic era and continued to be played up to recently (as enniapetro consisted of nine stones). It was played by two players on a shaded surface that was constituted of three concentric squares linked with the midpoints of their sides. They were thus created in the points of the section of the lines 24 positions for the pieces. The players were holding by nine pawns (of different colour