Music Theory
Music theory.net: Chord Ear Trainer
This online quiz gives students a chance to recognize triads and seventh chords, by listening to audio clips. Teachers can customize this quiz and print out progress reports.
Music Theory
Music theory.net: Introduction to Chords
A thorough description of chords, roots, and triads. Provides illustrated examples as well as audio clips to supplement this lesson.(You may need to download Flash Player to view this site.)
OpenStax
Open Stax: Catherine Schmidt Jones: Naming Triads
Learn about the various types of triads. This lesson focuses on the chords in root position. Included in this site are a few self checking tests.