Book 1
Book 1
Charlie Piechart and the Case of the Missing Hat
Charlie Piechart's second math mystery takes place at school-when a purple, sparkly cone-shaped princess hat goes missin... MoreCharlie Piechart and the Case of the Missing Hat
Book 2
Book 2
Charlie Piechart and the Case of the Missing Pizza Slice
With a dinnertime mystery and 5 hungry suspects, Charlie Piechart makes fractions fun. Charlie Piechart has a piechart ... MoreCharlie Piechart and the Case of the Missing Pizza Slice
