1. Long Tones - Bb - C, Bb - D, Bb - Eb, Bb - F
2. Tongued Long Tones - Bb - C, Bb - D, Bb - Eb, F Eb D C Bb.
3. Lip Slurs F-Bb, E-A, Eb-Ab, D-G
The best thing to help tone production and development is using long tones and demonstrating every day by playing yourself. Students will copy what they hear. I usually play measure or two and have them play it back.
New lines we usually work them in 2 measure chunks with rhythms/fingering, note names/fingering, then playing.