Start with the hand sign for Blue then open up your three fingers and your thumb to reveal an opening. Only the thumb and middle finger will touch. Remind students to keep their stems straight by smiling and holding up a wimpy stem.
It’s helpful for many age groups to hold the “two-oo” sign up to our eyes, talk about how this is the note with the hole in it that you can see through.
When saying the rhythms on the cards, track the hand sign smoothly along the card for two beats. Careful not to pulse the “oo” too much with your voice. Let your hand do it.