Josie's Lost Tooth by Jennifer K. Mann
What if you're first and best at everything - except losing your first tooth?
Josie is the monkey-bars champion, the first one to read a whole book by herself, and the second fastest runner in her class. But she's the WORST at losing teeth - the only kid in her class who still has all her baby teeth!
One night, Josie finally feels a tooth wiggle, just a little, and she can't wait to show her best friend, Richard, at school. But nothing makes the tooth fall out - not hanging upside down, chomping on an apple, or even pulling on the tooth with a string... Until, that is, Josie trips and goes SPLAT, and the tooth is lost for good. Now what can she leave under her pillow for the tooth fairy?