5If your child is interested in ancient Greece, there are many facts that they can learn. The Greek civilization was active from 800 B.C. to AD 600. The ancient Greeks are famous for a variety of developments. They were the first people to develop maths, pottery, and architecture. They also invented pottery and other materials that are used today. The Greeks called themselves Hellens and their land Greece. Here are a few interesting facts about Ancient Greece for kids.The Greeks called their country Hellas, not Greece. They called it Hellada or Hellas. A common greeting in the modern world is shaking hands. The first historical reference to the yo-yo dates back to around 440 B.C. and is a popular game for young people. In ancient Greece, girls typically married at thirteen or fourteen years old. Until the Myceneans conquered Crete, there were no toilet papers.The ancient Greeks had animals such as dogs and cats. They also had a very complex system of justice. In fact, the Romans copied Greek culture so completely that they even renamed the Greek gods. One third of the people living in the city-states of Ancient Greece were slaves. In the city of Athens, there were law trials that involved more than 500 citizens as jurors. In the U.S., the jury size is a mere twelve.