Ancient Greece was made up of many city-states (polis) including Thebes, Corinth, Delphi, Argos and Rhodes.
Citizens didn't consider themselves to be Greek, they considered themselves to come from their city-state; therefore:
Corinthians came from Corinth
Rhodians came from Rhodes
The two most important city-states of Ancient Greece were Athens and Sparta.
Read about toys In Ancient Greece. Do they differ much to what is played with today?
Education in Sparta
What are the differences between Athenian and Spartan Education?
For the full article listing check out: Greek Compendium