Ancient Greek Masks for Kids | eHow Ancient Greek Masks for Kids. They used masks for many different reasons, primarily for quick character changes. Female masks let men play women's roles, since women were not allowed to perform on stage. You have many options when creating ancient Greek masks for children, ranging from simplistic theater masks to masks modeled on prominent figures in Greek mythology. Theatre of ancient Greece Facts for Kids - Kiddle The theatre of ancient Greece was at its best from 550 BC to 220 BC. It was the beginning of modern western theatre, and some ancient Greek plays are still performed today. They invented the genres of tragedy (late 6th century BC), comedy (486 BC) and satyr plays. The city-state of Athens was a great cultural, political and military power during this period.