Ancient history : America's prehistoric civilizations: the mound builders
Had they been made of stone, they would have been among the greatest wonders of the ancient world. These were the pyramids and effigy earthen works by the Mound Building Cultures of the eastern half of the United States...
Ancient history : Ancient Britain: Stonehenge to Celtic Iron Age hill forts
It was once believed that the island of Britain was shaped by continuous invasions and conquering tribes from Europe. But now we know this isn't true. Follow the incredible saga of a glorious 7000 year evolution of Ancie..
Ancient history : Ancient Pueblo people: the Anasazi
They stand today much as their builders left them 500 years ago. These are the cities of the Anasazi, the ancient Pueblo people of the four corners region of the western United States. Their history is the history of how..
Ancient history: Greek accomplishments
Globe Trekker's Zay Harding hosts this new look at one of the world's most ancient civilizations. It has been said that all western art and science is but a footnote to ancient Greek accomplishments. In this program, the..
Ancient history: the Greek city-state and democracy
Globe Trekker's Zay Harding hosts this new look at the world's ancient civilization of Greece. During the Golden Age of the Greek City States 2500 years ago, the ancient Greeks gave to the world something much more valua..
Ancient history: the Incas
Six hundred years ago, in less than a century, the Inca people, located in present day Peru, forged an empire equal to that of the Greeks and Romans. They built their empire not by military conquest but by treaties, base..
Ancient history: the Maya
The Mayas are best known for their spectacular architecture that made up their city centers, but they are also the most misunderstood of the great ancient civilizations. First, they were not the blood thirsty warrior soc..
Ancient theatres of Greece and Rome
Beginning with the most rudimentary of theaters - an open plot of ground which the Greeks called a theatron or "seeing space" - this program illustrates in stunning detail how that idea evolved over the centuries. Profes..
Angles, Arcs and Sectors: Angles Formed by Intersecting Lines
This clip looks at angles that are formed by two intersecting lines, in the process explaining what constitutes vertical and supplementary angles.
Angles, Arcs and Sectors: Angles, Circles and Arcs
This clip includes several practical problems in its discussion of angles in circles. It also explains how to find the length of an arc.