Sister Magic: Violet Makes a Splash, by Anne Mazer

This book is about a girl named Violet and her older sister Mabel.  Violet has magic just like her Uncle Varten.  They are having a summer yard sale.  When Violet makes a pool the problem begins.  Mable worries people will find out about the magic. At the yardsale there is a pie contest.  Violet makes a blackberry surprise.  The surprise is blackbirds, like the nursery rhyme.

I liked this book because it is about how Violet doesn't know how to use magic and she causes problems for the family.