The 3 Song

 

 

(To the tune of "Yankee Doodle")

 

3, 6, 9, 12, 15, 18 (Yankee doodle went to town)

21, 24 (A-riding on a pony)

27, 30 
(Stuck a feather in his hat)
 
Let's count by 3's some more!  (And called it macaroni)