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.”
This is Plato, writing around 360BC, about how Egyptian children learned about maths through ‘enjoyment and games’ [Laws 7,819].
I heard this during the A History of the World in 100 Objects podcast about the Rhind Mathematical Papyrus from 1550BC, which “contains 84 different calculations to help with various aspects of Egyptian life, from pyramid building to working out how much grain it takes to fatten a goose.”