I have heard this song done to "This is the way you wash your clothes" tune as well as "Twinkle, Twinkle, Little Star" tune.  The kids in your class will probably have a favorite tune to sing it to!  It is a great way for them to learn at least 8 bodyparts. (And you will see them singing it to themselves during quizzes on that vocabulary!)
   Start singing slowly, then go faster and faster each time you sing it again! I know that the English says "toes" and the others say feet...but it rhymes better!
                 EN ESPANOL

Cabeza, hombros, rodillas y pies
Rodillas y pies
Rodillas y piez
Cabeza, hombros, rodillas y pies
Ojos, orejas, boca y nariz
                 EN FRANCAIS

Tete, epaules, genoux et pieds
Genoux et pieds
Genoux et pieds
Tete, epaules, genoux et pieds
Les yeux, les oreilles, la bouche et le nez
                   IN ENGLISH

Head, shoulders, knees and toes
Knees and toes
Knees and toes
Head, shoulder, knees and toes
Eyes, ears, mouth and nose