Science Buddies
Science Buddies: Comparing Vocal Ranges: How High and Low Can You Go?
What is the highest note you can sing? How about the lowest? Do you think males and females can reach the same notes? How about children and adults? Find out the answers to all these questions in this "note"-worthy science fair project.
SingWise
Sing Wise: Understanding Vocal Range, Vocal Registers, and Voice Type
Clear explanations of many terms used in evaluating and describing singing voices. Learning these explanations should help students find their comfortable singing ranges.
Lumen Learning
Lumen: Music Appreciation: Vocal Types and Ranges
This resource explains the six vocal ranges and the qualities which make individual voices within the ranges different. There is a video lecture and some associated videos of professional singers with the different voice ranges.
Other
An Introduction to Singing Technique
This Scena.org site explains the singing technique of the coutertenor. Also includes the history of the coutertenor, tips, and images.
Alabama Learning Exchange
Alex: I Can't Hear You!
A lesson plan that demonstrates to students that their voices can have different volumes and that different volumes are appropriate for different situations.