Here are a few videos you can watch you help you complete your chart. You do not need to watch them all!
http://www.youtube.com/watch?v=DIrUHVFkm9A
http://www.youtube.com/watch?v=nPuvFXv8Gos
http://www.youtube.com/watch?v=8azVqGqN-Ek (student-created video, decent.)
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