I usually don't do any preparation for this song, and just get the kids to point to the body parts when they come up!
It's amazing when the kids can understand a full story in English!
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Doing a play of this song is the very best way to practice the output. Or you could try ...
The children throw a die and colour in the skeleton. It is great for feet,
foot, arm, arms, etc. Make it a race to see who can finish first.