Vocal Range Classification
... Range, Vocal Registers and Voice Type - A Glossary of Vocal Terms
Advanced Breathing Exercises for Added Breathing Control When Singing!
Oh, this is a funny way of distinguishing the voice ranges.... they completely left out "bird people" for the baritone and the soprano parts... -.-
Discover how breathing for singing is different from breathing at rest: http://tips.how2improvesinging.com/breathing-for-singing/
This is probably the most accurate thing I have ever seen.
"Hands Go Up" sung to Twinkle, Twinkle, Little Star to transition them to the carpet for story time.
Vocal Range Exercises - Increase Vocal Range and Sing Higher - Felicia Ricci - YouTube
chart of vocal ranges
Article on exercises to expand vocal range on "Making it In Music" site