This clip illustrates that the absolute value of -1 is 1.

Jim al-Khalili shows us how the man who invented algebra, Al-Khwarizmi, would use his mathmatical discoveries during his time period, when things were much different.

The Stanley Milgrim experiment is a series of radical experiments that test the willingness of individuals to obey authority. Individual variables are changed in order to determine what influences the test subjects. In nearly every case, the fundamental result is the same.

Tony the crossing guard explains how he helps children cross the street as a crossing guard, and why it is important for safety.

This clip explains how to solve 2-step equations using the reverse of PEMDAS.