"...Freeborn children [of Greece] should learn as much of these things as the vast throngs of young in Egypt do with their alphabet. First as regards arithmetic, lessons have been devised there for absolute beginners based on enjoyment and games, distributing apples and garlands so that the same numbers are divided among larger and smaller groups.
...The teachers, by applying the rules and practices of arithmetic to play, prepare their pupils for the tasks of marshalling and leading armies and organizing military expeditions, managing a household too, and altogether form them into persons more useful to themselves and to others, and a great deal wider awake."

Plato, Laws 7, 819