Where did human beings come from? How did they settle into communities and civilizations? Your class will find the answers in this fascinating presentation, which takes the viewer through the stages of mankind, from the primitive...

Interested Earth enthusiasts are introduced to ice ages. The 26,000-year cycle is charted and the eras named. Several slides are dedicated to the carbon cycle and how it contributes to the changes. The reasons for the cooling of the...

Three class periods are required to carry out this science lesson on glacial movement, the Great Lakes basin, and the lock system that allows travel on the lakes. It is an ambitious undertaking as your class experiments with a glacier...

Students brainstorm what living conditions during the period known as the Little Ice Age (1350-1850) might have been like. They research lifestyles, the economy, crop yields, and human and livestock mortality.