Click on these links to watch te videos I assigned for homework
http://www.youtube.com/watch?v=Ag4qoNzEH4w
http://www.youtube.com/watch?v=mELVWr-jlxY
http://www.youtube.com/watch?v=3PJ2jZlVf-M
http://www.youtube.com/watch?v=g9zgE5tsFx8
http://www.youtube.com/watch?v=iGDpZdZuU8c