Grace Maccarone spins a lovely tale of a Ballet school in Messina where 8 little ballerinas dance through the day in four lines of two. Everything is just as it should be, until Miss Lina introduces a new student, Regina.  Now, no longer eight but nine, the dance is not so graceful as the girls try to incorporate a new friend into their dance. After a bit of adjustment, they solve the problem and Regina fits in perfectly, in a mathematical way.   (Not giving away the secret!) Oh the JOY, JOY, JOY of a perfect rhyme in perfect time!!!  The “read aloud” factor of this book is 10+ for…