Longtones: Remember to start your practice routine with long tones. Aim for a consistent tone, and be sure that you have sufficient air supply for the exercise. Don’t lift your shoulders when you take a deep breath (use your diaphragm to support the sound/air-flow). Focus on tuning and tone, especially as you get louder.
Chromatic scale: Watch that your tone is consistent as you go up the full range of the saxophone. Remember to warm up the sound in the upper register, and avoid pinching the tone. Relax your jaw, and try not to tense up at any point.
Whole tone scale: Practice both whole tone scales (every other note of the chromatic scale, so there are really only 2 which can start from varying notes!). Be sure to go slow until you have it more under your fingers – use a metronome to help you solidify your time/rhythmic sense. Always aim for evenness between notes and tone when practicing any scale.
Fourths: Continue practicing fourths from last week, going up chromatically. Practice the fourths ascending and descending. Use the notation I gave you if you need a reminder of the notes.
Watch that you don’t over-blow the middle D, as the overtone above will start to sound. This might also have had something to do with the chipped reed potentially, as you mentioned. Make sure you manage to get some fresh reeds before your assembly on Monday – it’ll make playing the horn a whole lot easier! Good luck with the practicing and performance :)
See you next week!