The United States Civil War forced Northern and Southern societies, as well as the people who made up those societies, to reconstruct their vision of themselves and their identities. A series of video-based web lessons look at the great...

The Emancipation Proclamation freed slaves in the Confederate states. The Thirteenth Amendment banned slavery in the United States. However, neither document defined freedom. The second lesson in the Reconstruction Era series examines...

Entertain and grab your learners' attention with a short video clip that engagingly teaches the concept of a permutation and how a factorial is a wonderful shortcut for theoretical probability calculations.