This can be sung as "Sandy Boy" for a boy or "Sandy Girl" for a girl.
One little sandy girl
Sitting on a stone
Because she's all alone.
Stand up sandy girl,
Wipe your tears away
Choose a friend who likes to dance
And take them out to play!
Tra la la la la la la la, tra la la la la,
Tra la la la la la la la, tra la la la la.
The kids go in a circle. One child sits in the middle and acts out the lyrics pretending to be crying. Then s/he picks another kid and the two dance in the middle of the circle. Then the kid who was picked stays in the middle of the circle. The one who had been there initially now joins the circle with all the other kids. Then the song is repeated with the same actions.