Final answer:
In the context of music theory for middle school Arts education, syllables with a single vowel sound are often associated with a single musical note such as a quarter note, but the actual note used can vary depending on the musical context.
Step-by-step explanation:
The question regarding syllables and musical notation falls under the subject of Arts, specifically focusing on music theory. Syllables containing only one vowel sound are typically set to a single musical note. The type of note varies depending on the tempo and rhythm of the piece of music; however, for simplicity, many educational examples use a quarter note, although this is not a fixed rule and is context-dependent.
When teaching beginners, it is common to associate single syllables or sounds with more straightforward rhythmic values such as quarter notes or half notes before introducing more complex note values like eighth notes or sixteenth notes.