Warm-ups for choirs

Stand with your feet hip-width apart with your weight evenly distributed, knees soft, arms hanging loosely by your sides, feel your spine lengthening and widening, and that the crown of your head is always the highest point.

Especially good for boys with changing voices, but excellent ear training for all singers. Sing or give a note and then ask the singers to do a vocal swoop on an open vowel, starting from as low as possible in their range, going up to as high as comfortable in their vocal range, and then descending to finish on the note that you gave. To add extra challenge, ask the singers to make the swoop slower/last longer. You could count along to help.