Are mathematics fun?
For Christos, the answer was "definitely not" until his summer holidays started and he met an old acquaintance.
Mr. Platon, the strange and kind neighbor, was ready to change Christos' mind forever.
"When you learn by playing, things get interesting," Mr. Platon often says, and he introduces us to a wonderful world hidden behind clever thinking games,
such as 'Solitaire', 'Tangram', 'Rubik's Cube', 'Dominoes', chess, and more.

Mr. Platon's clever games make arithmetic and geometry seem like a game, and the combination of strategy and mathematical thinking allows us to discover the fun side of mathematics... by playing!