This video introduces the definition of Velocity.  It also walks through a simple, introductory average velocity example problem.  At the end it defines speed and discusses the difference between speed and velocity.

Content Times:
0:18 Velocity Definition
2:12 Velocity has both Magnitude and Direction
3:06 Example Problem
8:41 Speed Definition
9:15 Differences between Speed and Velocity
11:00 Outtakes