Challenge students to explore several important unexplained events that helped shape history. Students use primary source materials, posters, and simulations to find clues and to make informed decisions about these events. There are no "right" or "wrong" answers. These real-life mysteries encourage students to research, think, debate, and form conclusions.

• Who invented the alphabet?
• Is the lost city of Atlantis a legend?
• Was there really a Trojan horse?
• Was King Tut murdered?
• Who built Stonehenge?
• What's the secret behind China's Terra Cotta Army?
• Did King Arthur really exist?
• What do Peru's Nazca lines mean?
• Why were the statues on Easter Island built?
• How did the Iceman really die?

The activities target standards in these areas:

• relationships and patterns in history
• historical perspective
• map skills
• development of civilizations
• presentation skills