Lesson 14
Seconds, Thirds, Sixths, and Sevenths Drill and Practice: Seconds
Drill and Practice: Thirds
Drill and Practice: Sixths
Drill and Practice: Sevenths
Lesson 15
Primes, Fourths, Fifths, and Octaves
Drill and Practice: Primes
Drill and Practice: Fourths
Drill and Practice: Fifths
Drill and Practice: Octaves