I introduce the concept of Arithmetic Sequences and work through some examples.
For all my lessons so far on Sequences and Series go here:)
http://www.profrobbob.com/pre-calculus/intro-to-sequences-arithmetic-geometric
Check out http://www.ProfRobBob.com/, there you will find my lessons organized by class/subject and then by topics within each class. Find free review test, useful notes and more at http://www.mathplane.com/ If you'd like to make a donation to support my efforts look for the "Tip the Teacher" button on my channel's homepage / profrobbob