Have you been earning less than stellar ratings at band festivals in the category of intonation? If you have than your students need "Let's Play in Tune!" This method was designed to accompany the beginning band method Accent on Achievement, but it can be used by itself without it. It will teach your students how to tune their instruments and how to play in tune on all of their pitches. This method was given a rating as a model project from the American Band College of Sam Houston State University.
Let's Play in Tune can be purchased at these websites: (Right click to get the link).
J.W. Pepper: Let's Play in Tune Set
Teachers Pay Teachers: Let's Play in Tune, Bundle by Band Orchestra and Choral Music Shop (teacherspayteachers.com)
Teachers Pay Teachers: Let's Play In Tune Conductor by Band Orchestra and Choral Music Shop (teacherspayteachers.com)